238484530638 has 64 divisors (see below), whose sum is σ = 557931840000. Its totient is φ = 75301011072.

The previous prime is 238484530637. The next prime is 238484530643. The reversal of 238484530638 is 836035484832.

238484530638 is a `hidden beast` number, since 2 + 3 + 8 + 48 + 4 + 530 + 63 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238484530631) 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, 14816631 + ... + 14832717.

It is an arithmetic number, because the mean of its divisors is an integer number (8717685000).

Almost surely, 2^238484530638 is an apocalyptic number.

238484530638 is an abundant number, since it is smaller than the sum of its proper divisors (319447309362).

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

238484530638 is a wasteful number, since it uses less digits than its factorization.

238484530638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30566 (or 30560 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 238484530638 in words is "two hundred thirty-eight billion, four hundred eighty-four million, five hundred thirty thousand, six hundred thirty-eight".