18404154356 has 24 divisors (see below), whose sum is σ = 36811486656. Its totient is φ = 7886813760.

The previous prime is 18404154337. The next prime is 18404154403. The reversal of 18404154356 is 65345140481.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433811 + ... + 474341.

It is an arithmetic number, because the mean of its divisors is an integer number (1533811944).

Almost surely, 2^18404154356 is an apocalyptic number.

It is an amenable number.

18404154356 is an abundant number, since it is smaller than the sum of its proper divisors (18407332300).

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

18404154356 is a wasteful number, since it uses less digits than its factorization.

18404154356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56759 (or 56757 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 18404154356 in words is "eighteen billion, four hundred four million, one hundred fifty-four thousand, three hundred fifty-six".