238938665 has 16 divisors (see below), whose sum is σ = 328368000. Its totient is φ = 163503360.

The previous prime is 238938649. The next prime is 238938673. The reversal of 238938665 is 566839832.

It is not a de Polignac number, because 238938665 - 2⁴ = 238938649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10625 + ... + 24305.

It is an arithmetic number, because the mean of its divisors is an integer number (20523000).

Almost surely, 2^238938665 is an apocalyptic number.

It is an amenable number.

238938665 is a deficient number, since it is larger than the sum of its proper divisors (89429335).

238938665 is a wasteful number, since it uses less digits than its factorization.

238938665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14192.

The product of its digits is 1866240, while the sum is 50.

The square root of 238938665 is about 15457.6409907851. The cubic root of 238938665 is about 620.5290879072.

The spelling of 238938665 in words is "two hundred thirty-eight million, nine hundred thirty-eight thousand, six hundred sixty-five".