137883961 has 2 divisors, whose sum is σ = 137883962. Its totient is φ = 137883960.

The previous prime is 137883953. The next prime is 137883971. The reversal of 137883961 is 169388731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88266025 + 49617936 = 9395^2 + 7044^2 .

It is a cyclic number.

It is not a de Polignac number, because 137883961 - 2³ = 137883953 is a prime.

It is not a weakly prime, because it can be changed into another prime (137883901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68941980 + 68941981.

It is an arithmetic number, because the mean of its divisors is an integer number (68941981).

Almost surely, 2^137883961 is an apocalyptic number.

It is an amenable number.

137883961 is a deficient number, since it is larger than the sum of its proper divisors (1).

137883961 is an equidigital number, since it uses as much as digits as its factorization.

137883961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 137883961 is about 11742.4001379616. The cubic root of 137883961 is about 516.6200419020.

The spelling of 137883961 in words is "one hundred thirty-seven million, eight hundred eighty-three thousand, nine hundred sixty-one".