9018402057 has 20 divisors (see below), whose sum is σ = 15396496896. Its totient is φ = 5153372280.

The previous prime is 9018402047. The next prime is 9018402091. The reversal of 9018402057 is 7502048109.

9018402057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9018402057 - 2⁷ = 9018401929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9018402047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7952169 + ... + 7953302.

Almost surely, 2^9018402057 is an apocalyptic number.

It is an amenable number.

9018402057 is a deficient number, since it is larger than the sum of its proper divisors (6378094839).

9018402057 is a wasteful number, since it uses less digits than its factorization.

9018402057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15905490 (or 15905481 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 9018402057 is about 94965.2676350675. The cubic root of 9018402057 is about 2081.5005549826.

The spelling of 9018402057 in words is "nine billion, eighteen million, four hundred two thousand, fifty-seven".