18495487168 has 56 divisors (see below), whose sum is σ = 39020483808. Its totient is φ = 8678731776.

The previous prime is 18495487123. The next prime is 18495487169. The reversal of 18495487168 is 86178459481.

It is not an unprimeable number, because it can be changed into a prime (18495487169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40521 + ... + 196552.

Almost surely, 2^18495487168 is an apocalyptic number.

It is an amenable number.

18495487168 is an abundant number, since it is smaller than the sum of its proper divisors (20524996640).

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

18495487168 is a wasteful number, since it uses less digits than its factorization.

18495487168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237161 (or 237151 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 61.

The spelling of 18495487168 in words is "eighteen billion, four hundred ninety-five million, four hundred eighty-seven thousand, one hundred sixty-eight".