18106491468 has 24 divisors (see below), whose sum is σ = 45498363568. Its totient is φ = 5571228096.

The previous prime is 18106491443. The next prime is 18106491523. The reversal of 18106491468 is 86419460181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58033471 + ... + 58033782.

Almost surely, 2^18106491468 is an apocalyptic number.

It is an amenable number.

18106491468 is an abundant number, since it is smaller than the sum of its proper divisors (27391872100).

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

18106491468 is a wasteful number, since it uses less digits than its factorization.

18106491468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116067273 (or 116067271 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 18106491468 in words is "eighteen billion, one hundred six million, four hundred ninety-one thousand, four hundred sixty-eight".