238434122957 has 2 divisors, whose sum is σ = 238434122958. Its totient is φ = 238434122956.

The previous prime is 238434122879. The next prime is 238434122989. The reversal of 238434122957 is 759221434832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236151290116 + 2282832841 = 485954^2 + 47779^2 .

It is a cyclic number.

It is not a de Polignac number, because 238434122957 - 2¹² = 238434118861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238434322957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119217061478 + 119217061479.

It is an arithmetic number, because the mean of its divisors is an integer number (119217061479).

Almost surely, 2^238434122957 is an apocalyptic number.

It is an amenable number.

238434122957 is a deficient number, since it is larger than the sum of its proper divisors (1).

238434122957 is an equidigital number, since it uses as much as digits as its factorization.

238434122957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The spelling of 238434122957 in words is "two hundred thirty-eight billion, four hundred thirty-four million, one hundred twenty-two thousand, nine hundred fifty-seven".