18740427264 has 120 divisors (see below), whose sum is σ = 58246800612. Its totient is φ = 5766266880.

The previous prime is 18740427247. The next prime is 18740427337. The reversal of 18740427264 is 46272404781.

18740427264 is a `hidden beast` number, since 187 + 40 + 427 + 2 + 6 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12996000000 + 5744427264 = 114000^2 + 75792^2 .

It is a super-2 number, since 2×18740427264² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96517 + ... + 216324.

Almost surely, 2^18740427264 is an apocalyptic number.

It is an amenable number.

18740427264 is an abundant number, since it is smaller than the sum of its proper divisors (39506373348).

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

18740427264 is a wasteful number, since it uses less digits than its factorization.

18740427264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312878 (or 312859 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 18740427264 in words is "eighteen billion, seven hundred forty million, four hundred twenty-seven thousand, two hundred sixty-four".