238187781832 has 256 divisors, whose sum is σ = 612135014400. Its totient is φ = 83887488000.

The previous prime is 238187781809. The next prime is 238187781841.

238187781832 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146937982 + ... + 146939602.

It is an arithmetic number, because the mean of its divisors is an integer number (2391152400).

Almost surely, 2^238187781832 is an apocalyptic number.

238187781832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238187781832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306067507200).

238187781832 is an abundant number, since it is smaller than the sum of its proper divisors (373947232568).

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

238187781832 is a wasteful number, since it uses less digits than its factorization.

238187781832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2024 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 58.

The spelling of 238187781832 in words is "two hundred thirty-eight billion, one hundred eighty-seven million, seven hundred eighty-one thousand, eight hundred thirty-two".