Search a number
-
+
18741129852 = 2236723309863
BaseRepresentation
bin10001011101000011…
…101111001001111100
31210101002202001001110
4101131003233021330
5301340212123402
612335355242020
71232264655354
oct213503571174
953332661043
1018741129852
117a47974275
123770449310
1319c8940863
14c9b02db64
1574a4a256c
hex45d0ef27c

18741129852 has 24 divisors (see below), whose sum is σ = 44381981056. Its totient is φ = 6153803568.

The previous prime is 18741129829. The next prime is 18741129899. The reversal of 18741129852 is 25892114781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11654128 + ... + 11655735.

Almost surely, 218741129852 is an apocalyptic number.

18741129852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18741129852 is an abundant number, since it is smaller than the sum of its proper divisors (25640851204).

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

18741129852 is a wasteful number, since it uses less digits than its factorization.

18741129852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23309937 (or 23309935 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The spelling of 18741129852 in words is "eighteen billion, seven hundred forty-one million, one hundred twenty-nine thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 12 67 134 201 268 402 804 23309863 46619726 69929589 93239452 139859178 279718356 1561760821 3123521642 4685282463 6247043284 9370564926 18741129852