238946445018 has 16 divisors (see below), whose sum is σ = 530992100160. Its totient is φ = 79648814988.

The previous prime is 238946444983. The next prime is 238946445019. The reversal of 238946445018 is 810544649832.

238946445018 is a `hidden beast` number, since 2 + 3 + 8 + 94 + 6 + 44 + 501 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 4424934167 = 238946445018 / (2 + 3 + 8 + 9 + 4 + 6 + 4 + 4 + 5 + 0 + 1 + 8).

It is not an unprimeable number, because it can be changed into a prime (238946445019) 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, 2212467030 + ... + 2212467137.

It is an arithmetic number, because the mean of its divisors is an integer number (33187006260).

Almost surely, 2^238946445018 is an apocalyptic number.

238946445018 is an abundant number, since it is smaller than the sum of its proper divisors (292045655142).

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

238946445018 is a wasteful number, since it uses less digits than its factorization.

238946445018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424934178 (or 4424934172 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 238946445018 in words is "two hundred thirty-eight billion, nine hundred forty-six million, four hundred forty-five thousand, eighteen".