137937971 has 2 divisors, whose sum is σ = 137937972. Its totient is φ = 137937970.

The previous prime is 137937913. The next prime is 137938001. The reversal of 137937971 is 179739731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137937971 - 2⁶ = 137937907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137937911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68968985 + 68968986.

It is an arithmetic number, because the mean of its divisors is an integer number (68968986).

Almost surely, 2^137937971 is an apocalyptic number.

137937971 is a deficient number, since it is larger than the sum of its proper divisors (1).

137937971 is an equidigital number, since it uses as much as digits as its factorization.

137937971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250047, while the sum is 47.

The square root of 137937971 is about 11744.6996981617. The cubic root of 137937971 is about 516.6874875180.

The spelling of 137937971 in words is "one hundred thirty-seven million, nine hundred thirty-seven thousand, nine hundred seventy-one".