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18744468307932 = 22341136727870163
BaseRepresentation
bin1000100001100010010010…
…10111111111111111011100
32110100221202020002011002110
410100301021113333333130
54424102132341323212
6103511031224354020
73643146253514643
oct420611127777734
973327666064073
1018744468307932
115a77536768864
122128978615910
13a5c798bca453
1448b34689a35a
152278bed75a3c
hex110c495fffdc

18744468307932 has 48 divisors (see below), whose sum is σ = 44836627997952. Its totient is φ = 6091302606720.

The previous prime is 18744468307931. The next prime is 18744468307933. The reversal of 18744468307932 is 23970386444781.

It is an interprime number because it is at equal distance from previous prime (18744468307931) and next prime (18744468307933).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18744468307931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13262518 + ... + 14607645.

It is an arithmetic number, because the mean of its divisors is an integer number (934096416624).

Almost surely, 218744468307932 is an apocalyptic number.

18744468307932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18744468307932 is an abundant number, since it is smaller than the sum of its proper divisors (26092159690020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18744468307932 is a wasteful number, since it uses less digits than its factorization.

18744468307932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27871578 (or 27871576 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 66.

The spelling of 18744468307932 in words is "eighteen trillion, seven hundred forty-four billion, four hundred sixty-eight million, three hundred seven thousand, nine hundred thirty-two".

Divisors: 1 2 3 4 6 12 41 82 123 164 246 492 1367 2734 4101 5468 8202 16404 56047 112094 168141 224188 336282 672564 27870163 55740326 83610489 111480652 167220978 334441956 1142676683 2285353366 3428030049 4570706732 6856060098 13712120196 38098512821 76197025642 114295538463 152394051284 228591076926 457182153852 1562039025661 3124078051322 4686117076983 6248156102644 9372234153966 18744468307932