18350931000 has 64 divisors (see below), whose sum is σ = 57254914080. Its totient is φ = 4893580800.

The previous prime is 18350930981. The next prime is 18350931017. The reversal of 18350931000 is 13905381.

It is a happy number.

It is a super-2 number, since 2×18350931000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3055489 + ... + 3061488.

Almost surely, 2^18350931000 is an apocalyptic number.

18350931000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18350931000 is an abundant number, since it is smaller than the sum of its proper divisors (38903983080).

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

18350931000 is a wasteful number, since it uses less digits than its factorization.

18350931000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117001 (or 6116987 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 18350931000 in words is "eighteen billion, three hundred fifty million, nine hundred thirty-one thousand".