18775238265 has 112 divisors (see below), whose sum is σ = 40638614400. Its totient is φ = 8131021056.

The previous prime is 18775238233. The next prime is 18775238267. The reversal of 18775238265 is 56283257781.

18775238265 is a `hidden beast` number, since 1 + 87 + 75 + 238 + 265 = 666.

It is not a de Polignac number, because 18775238265 - 2⁵ = 18775238233 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18775238267) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 465421 + ... + 504149.

Almost surely, 2^18775238265 is an apocalyptic number.

18775238265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18775238265 is an abundant number, since it is smaller than the sum of its proper divisors (21863376135).

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

18775238265 is an equidigital number, since it uses as much as digits as its factorization.

18775238265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38778 (or 38763 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The spelling of 18775238265 in words is "eighteen billion, seven hundred seventy-five million, two hundred thirty-eight thousand, two hundred sixty-five".