238576813 has 4 divisors (see below), whose sum is σ = 238684320. Its totient is φ = 238469308.

The previous prime is 238576801. The next prime is 238576859. The reversal of 238576813 is 318675832.

238576813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238576813 - 2⁵ = 238576781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238576813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238576873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50353 + ... + 54886.

It is an arithmetic number, because the mean of its divisors is an integer number (59671080).

Almost surely, 2^238576813 is an apocalyptic number.

It is an amenable number.

238576813 is a deficient number, since it is larger than the sum of its proper divisors (107507).

238576813 is a wasteful number, since it uses less digits than its factorization.

238576813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107506.

The product of its digits is 241920, while the sum is 43.

The square root of 238576813 is about 15445.9319239727. The cubic root of 238576813 is about 620.2156837181.

The spelling of 238576813 in words is "two hundred thirty-eight million, five hundred seventy-six thousand, eight hundred thirteen".