18573855340 has 12 divisors (see below), whose sum is σ = 39005096256. Its totient is φ = 7429542128.

The previous prime is 18573855263. The next prime is 18573855341. The reversal of 18573855340 is 4355837581.

It is not an unprimeable number, because it can be changed into a prime (18573855341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464346364 + ... + 464346403.

It is an arithmetic number, because the mean of its divisors is an integer number (3250424688).

Almost surely, 2^18573855340 is an apocalyptic number.

18573855340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18573855340 is an abundant number, since it is smaller than the sum of its proper divisors (20431240916).

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

18573855340 is a wasteful number, since it uses less digits than its factorization.

18573855340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928692776 (or 928692774 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 18573855340 in words is "eighteen billion, five hundred seventy-three million, eight hundred fifty-five thousand, three hundred forty".