18604792540 has 24 divisors (see below), whose sum is σ = 39073441680. Its totient is φ = 7441273728.

The previous prime is 18604792447. The next prime is 18604792601. The reversal of 18604792540 is 4529740681.

It is a super-2 number, since 2×18604792540² (a number of 21 digits) contains 22 as substring.

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, 246979 + ... + 313381.

It is an arithmetic number, because the mean of its divisors is an integer number (1628060070).

Almost surely, 2^18604792540 is an apocalyptic number.

18604792540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18604792540 is an abundant number, since it is smaller than the sum of its proper divisors (20468649140).

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

18604792540 is a wasteful number, since it uses less digits than its factorization.

18604792540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80421 (or 80419 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 18604792540 in words is "eighteen billion, six hundred four million, seven hundred ninety-two thousand, five hundred forty".