18258653163 has 32 divisors (see below), whose sum is σ = 25503089920. Its totient is φ = 11609619840.

The previous prime is 18258653099. The next prime is 18258653167. The reversal of 18258653163 is 36135685281.

It is not a de Polignac number, because 18258653163 - 2⁶ = 18258653099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18258653167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1085445 + ... + 1102137.

It is an arithmetic number, because the mean of its divisors is an integer number (796971560).

Almost surely, 2^18258653163 is an apocalyptic number.

18258653163 is a deficient number, since it is larger than the sum of its proper divisors (7244436757).

18258653163 is a wasteful number, since it uses less digits than its factorization.

18258653163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16939.

The product of its digits is 1036800, while the sum is 48.

The spelling of 18258653163 in words is "eighteen billion, two hundred fifty-eight million, six hundred fifty-three thousand, one hundred sixty-three".