18497951316 has 48 divisors (see below), whose sum is σ = 51646705600. Its totient is φ = 5691676896.

The previous prime is 18497951287. The next prime is 18497951321. The reversal of 18497951316 is 61315979481.

18497951316 is a `hidden beast` number, since 1 + 8 + 49 + 79 + 513 + 16 = 666.

It is a super-2 number, since 2×18497951316² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 6586186 + ... + 6588993.

Almost surely, 2^18497951316 is an apocalyptic number.

It is an amenable number.

18497951316 is an abundant number, since it is smaller than the sum of its proper divisors (33148754284).

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

18497951316 is a wasteful number, since it uses less digits than its factorization.

18497951316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175205 (or 13175197 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 18497951316 in words is "eighteen billion, four hundred ninety-seven million, nine hundred fifty-one thousand, three hundred sixteen".