238916057 has 2 divisors, whose sum is σ = 238916058. Its totient is φ = 238916056.

The previous prime is 238916053. The next prime is 238916063. The reversal of 238916057 is 750619832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156850576 + 82065481 = 12524^2 + 9059^2 .

It is a cyclic number.

It is not a de Polignac number, because 238916057 - 2² = 238916053 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238916053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119458028 + 119458029.

It is an arithmetic number, because the mean of its divisors is an integer number (119458029).

Almost surely, 2^238916057 is an apocalyptic number.

It is an amenable number.

238916057 is a deficient number, since it is larger than the sum of its proper divisors (1).

238916057 is an equidigital number, since it uses as much as digits as its factorization.

238916057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 238916057 is about 15456.9096846685. The cubic root of 238916057 is about 620.5095161284.

The spelling of 238916057 in words is "two hundred thirty-eight million, nine hundred sixteen thousand, fifty-seven".