238903655 has 4 divisors (see below), whose sum is σ = 286684392. Its totient is φ = 191122920.

The previous prime is 238903649. The next prime is 238903661. The reversal of 238903655 is 556309832.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (238903649) and next prime (238903661).

It is not a de Polignac number, because 238903655 - 2⁶ = 238903591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23890361 + ... + 23890370.

It is an arithmetic number, because the mean of its divisors is an integer number (71671098).

Almost surely, 2^238903655 is an apocalyptic number.

238903655 is a deficient number, since it is larger than the sum of its proper divisors (47780737).

238903655 is an equidigital number, since it uses as much as digits as its factorization.

238903655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47780736.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 238903655 is about 15456.5084996580. The cubic root of 238903655 is about 620.4987791744.

The spelling of 238903655 in words is "two hundred thirty-eight million, nine hundred three thousand, six hundred fifty-five".