237890942137 has 2 divisors, whose sum is σ = 237890942138. Its totient is φ = 237890942136.

The previous prime is 237890942089. The next prime is 237890942203. The reversal of 237890942137 is 731249098732.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183851430841 + 54039511296 = 428779^2 + 232464^2 .

It is a cyclic number.

It is not a de Polignac number, because 237890942137 - 2³⁵ = 203531203769 is a prime.

It is not a weakly prime, because it can be changed into another prime (237890942437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118945471068 + 118945471069.

It is an arithmetic number, because the mean of its divisors is an integer number (118945471069).

Almost surely, 2^237890942137 is an apocalyptic number.

It is an amenable number.

237890942137 is a deficient number, since it is larger than the sum of its proper divisors (1).

237890942137 is an equidigital number, since it uses as much as digits as its factorization.

237890942137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 237890942137 in words is "two hundred thirty-seven billion, eight hundred ninety million, nine hundred forty-two thousand, one hundred thirty-seven".