137965811 has 2 divisors, whose sum is σ = 137965812. Its totient is φ = 137965810.

The previous prime is 137965787. The next prime is 137965823. The reversal of 137965811 is 118569731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137965811 - 2⁶ = 137965747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137965111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68982905 + 68982906.

It is an arithmetic number, because the mean of its divisors is an integer number (68982906).

Almost surely, 2^137965811 is an apocalyptic number.

137965811 is a deficient number, since it is larger than the sum of its proper divisors (1).

137965811 is an equidigital number, since it uses as much as digits as its factorization.

137965811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 137965811 is about 11745.8848538541. The cubic root of 137965811 is about 516.7222461657.

The spelling of 137965811 in words is "one hundred thirty-seven million, nine hundred sixty-five thousand, eight hundred eleven".