238216904907 has 4 divisors (see below), whose sum is σ = 317622539880. Its totient is φ = 158811269936.

The previous prime is 238216904879. The next prime is 238216904909. The reversal of 238216904907 is 709409612832.

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

It is a cyclic number.

It is not a de Polignac number, because 238216904907 - 2⁶ = 238216904843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238216904907.

It is not an unprimeable number, because it can be changed into a prime (238216904909) 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, 39702817482 + ... + 39702817487.

It is an arithmetic number, because the mean of its divisors is an integer number (79405634970).

Almost surely, 2^238216904907 is an apocalyptic number.

238216904907 is a deficient number, since it is larger than the sum of its proper divisors (79405634973).

238216904907 is an equidigital number, since it uses as much as digits as its factorization.

238216904907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79405634972.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 238216904907 in words is "two hundred thirty-eight billion, two hundred sixteen million, nine hundred four thousand, nine hundred seven".