238138734208 has 64 divisors (see below), whose sum is σ = 480343842720. Its totient is φ = 117583119360.

The previous prime is 238138734187. The next prime is 238138734217. The reversal of 238138734208 is 802437831832.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37935166 + ... + 37941442.

Almost surely, 2^238138734208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238138734208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240171921360).

238138734208 is an abundant number, since it is smaller than the sum of its proper divisors (242205108512).

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

238138734208 is an equidigital number, since it uses as much as digits as its factorization.

238138734208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945 (or 9933 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 238138734208 in words is "two hundred thirty-eight billion, one hundred thirty-eight million, seven hundred thirty-four thousand, two hundred eight".