18310806992 has 10 divisors (see below), whose sum is σ = 35477188578. Its totient is φ = 9155403488.

The previous prime is 18310806979. The next prime is 18310807013. The reversal of 18310806992 is 29960801381.

It can be written as a sum of positive squares in only one way, i.e., 13802490256 + 4508316736 = 117484^2 + 67144^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572212703 + ... + 572212734.

Almost surely, 2^18310806992 is an apocalyptic number.

It is an amenable number.

18310806992 is a deficient number, since it is larger than the sum of its proper divisors (17166381586).

18310806992 is a wasteful number, since it uses less digits than its factorization.

18310806992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144425445 (or 1144425439 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 18310806992 in words is "eighteen billion, three hundred ten million, eight hundred six thousand, nine hundred ninety-two".