238250395921 has 2 divisors, whose sum is σ = 238250395922. Its totient is φ = 238250395920.

The previous prime is 238250395853. The next prime is 238250395961. The reversal of 238250395921 is 129593052832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236911933696 + 1338462225 = 486736^2 + 36585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238250395921 is a prime.

It is not a weakly prime, because it can be changed into another prime (238250395961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119125197960 + 119125197961.

It is an arithmetic number, because the mean of its divisors is an integer number (119125197961).

Almost surely, 2^238250395921 is an apocalyptic number.

It is an amenable number.

238250395921 is a deficient number, since it is larger than the sum of its proper divisors (1).

238250395921 is an equidigital number, since it uses as much as digits as its factorization.

238250395921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 238250395921 in words is "two hundred thirty-eight billion, two hundred fifty million, three hundred ninety-five thousand, nine hundred twenty-one".