18712346916 has 36 divisors (see below), whose sum is σ = 46081108752. Its totient is φ = 5909160816.

The previous prime is 18712346881. The next prime is 18712346941. The reversal of 18712346916 is 61964321781.

It is a super-2 number, since 2×18712346916² (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 11 ways as a sum of consecutive naturals, for example, 2155450 + ... + 2164113.

Almost surely, 2^18712346916 is an apocalyptic number.

It is an amenable number.

18712346916 is an abundant number, since it is smaller than the sum of its proper divisors (27368761836).

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

18712346916 is a wasteful number, since it uses less digits than its factorization.

18712346916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319608 (or 4319587 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The spelling of 18712346916 in words is "eighteen billion, seven hundred twelve million, three hundred forty-six thousand, nine hundred sixteen".