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18144911342 = 21729148312409
BaseRepresentation
bin10000111001100001…
…010101111111101110
31201211112212000000102
4100321201111333232
5244130044130332
612200300231102
71211435126105
oct207141257756
951745760012
1018144911342
1177713694a8
12362483b492
13193226a23c
14c41b8d03c
15712e80062
hex439855fee

18144911342 has 32 divisors (see below), whose sum is σ = 29834632800. Its totient is φ = 8238117888.

The previous prime is 18144911339. The next prime is 18144911423. The reversal of 18144911342 is 24311944181.

It is a junction number, because it is equal to n+sod(n) for n = 18144911296 and 18144911305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456034 + ... + 1468442.

It is an arithmetic number, because the mean of its divisors is an integer number (932332275).

Almost surely, 218144911342 is an apocalyptic number.

18144911342 is a deficient number, since it is larger than the sum of its proper divisors (11689721458).

18144911342 is a wasteful number, since it uses less digits than its factorization.

18144911342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13940.

The product of its digits is 27648, while the sum is 38.

The spelling of 18144911342 in words is "eighteen billion, one hundred forty-four million, nine hundred eleven thousand, three hundred forty-two".

Divisors: 1 2 17 29 34 58 493 986 1483 2966 12409 24818 25211 43007 50422 86014 210953 359861 421906 719722 731119 1462238 6117637 12235274 18402547 36805094 312843299 533673863 625686598 1067347726 9072455671 18144911342