18310546920 has 64 divisors (see below), whose sum is σ = 54948600000. Its totient is φ = 4881305088.

The previous prime is 18310546907. The next prime is 18310546957. The reversal of 18310546920 is 2964501381.

It is a super-2 number, since 2×18310546920² (a number of 21 digits) contains 22 as substring.

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, 398076 + ... + 441684.

It is an arithmetic number, because the mean of its divisors is an integer number (858571875).

Almost surely, 2^18310546920 is an apocalyptic number.

18310546920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18310546920 is an abundant number, since it is smaller than the sum of its proper divisors (36638053080).

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

18310546920 is a wasteful number, since it uses less digits than its factorization.

18310546920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47122 (or 47118 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 18310546920 in words is "eighteen billion, three hundred ten million, five hundred forty-six thousand, nine hundred twenty".