238785618 has 24 divisors (see below), whose sum is σ = 480784752. Its totient is φ = 79063144.

The previous prime is 238785607. The next prime is 238785641. The reversal of 238785618 is 816587832.

238785618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166621 + ... + 168047.

It is an arithmetic number, because the mean of its divisors is an integer number (20032698).

Almost surely, 2^238785618 is an apocalyptic number.

238785618 is an abundant number, since it is smaller than the sum of its proper divisors (241999134).

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

238785618 is a wasteful number, since it uses less digits than its factorization.

238785618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1599 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 238785618 is about 15452.6896687923. The cubic root of 238785618 is about 620.3965707756.

The spelling of 238785618 in words is "two hundred thirty-eight million, seven hundred eighty-five thousand, six hundred eighteen".