238761618 has 16 divisors (see below), whose sum is σ = 483277536. Its totient is φ = 78628160.

The previous prime is 238761599. The next prime is 238761647. The reversal of 238761618 is 816167832.

238761618 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×238761618³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a self number, because there is not a number n which added to its sum of digits gives 238761618.

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, 239223 + ... + 240218.

It is an arithmetic number, because the mean of its divisors is an integer number (30204846).

Almost surely, 2^238761618 is an apocalyptic number.

238761618 is an abundant number, since it is smaller than the sum of its proper divisors (244515918).

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

238761618 is a wasteful number, since it uses less digits than its factorization.

238761618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479529.

The product of its digits is 96768, while the sum is 42.

The square root of 238761618 is about 15451.9130854403. The cubic root of 238761618 is about 620.3757850227.

The spelling of 238761618 in words is "two hundred thirty-eight million, seven hundred sixty-one thousand, six hundred eighteen".