238962591137 has 2 divisors, whose sum is σ = 238962591138. Its totient is φ = 238962591136.

The previous prime is 238962591107. The next prime is 238962591143. The reversal of 238962591137 is 731195269832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222322623121 + 16639968016 = 471511^2 + 128996^2 .

It is a cyclic number.

It is not a de Polignac number, because 238962591137 - 2¹² = 238962587041 is a prime.

It is not a weakly prime, because it can be changed into another prime (238962591107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119481295568 + 119481295569.

It is an arithmetic number, because the mean of its divisors is an integer number (119481295569).

Almost surely, 2^238962591137 is an apocalyptic number.

It is an amenable number.

238962591137 is a deficient number, since it is larger than the sum of its proper divisors (1).

238962591137 is an equidigital number, since it uses as much as digits as its factorization.

238962591137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The spelling of 238962591137 in words is "two hundred thirty-eight billion, nine hundred sixty-two million, five hundred ninety-one thousand, one hundred thirty-seven".