137656819 has 2 divisors, whose sum is σ = 137656820. Its totient is φ = 137656818.

The previous prime is 137656811. The next prime is 137656829. The reversal of 137656819 is 918656731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137656819 - 2³ = 137656811 is a prime.

It is a super-2 number, since 2×137656819² = 37898799634397522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137656811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68828409 + 68828410.

It is an arithmetic number, because the mean of its divisors is an integer number (68828410).

Almost surely, 2^137656819 is an apocalyptic number.

137656819 is a deficient number, since it is larger than the sum of its proper divisors (1).

137656819 is an equidigital number, since it uses as much as digits as its factorization.

137656819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 137656819 is about 11732.7242787002. The cubic root of 137656819 is about 516.3362027373.

The spelling of 137656819 in words is "one hundred thirty-seven million, six hundred fifty-six thousand, eight hundred nineteen".