18968495616 has 120 divisors (see below), whose sum is σ = 62565092304. Its totient is φ = 5419560960.

The previous prime is 18968495563. The next prime is 18968495617. The reversal of 18968495616 is 61659486981.

18968495616 is a `hidden beast` number, since 1 + 8 + 9 + 6 + 8 + 4 + 9 + 5 + 616 = 666.

It is a super-2 number, since 2×18968495616² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18968495617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261775 + ... + 326286.

Almost surely, 2^18968495616 is an apocalyptic number.

18968495616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18968495616 is an abundant number, since it is smaller than the sum of its proper divisors (43596596688).

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

18968495616 is an equidigital number, since it uses as much as digits as its factorization.

18968495616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588092 (or 588073 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The spelling of 18968495616 in words is "eighteen billion, nine hundred sixty-eight million, four hundred ninety-five thousand, six hundred sixteen".