137965823 has 2 divisors, whose sum is σ = 137965824. Its totient is φ = 137965822.

The previous prime is 137965811. The next prime is 137965853. The reversal of 137965823 is 328569731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137965823 - 2⁶ = 137965759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137965853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68982911 + 68982912.

It is an arithmetic number, because the mean of its divisors is an integer number (68982912).

Almost surely, 2^137965823 is an apocalyptic number.

137965823 is a deficient number, since it is larger than the sum of its proper divisors (1).

137965823 is an equidigital number, since it uses as much as digits as its factorization.

137965823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 137965823 is about 11745.8853646713. The cubic root of 137965823 is about 516.7222611468.

The spelling of 137965823 in words is "one hundred thirty-seven million, nine hundred sixty-five thousand, eight hundred twenty-three".