137681039 has 2 divisors, whose sum is σ = 137681040. Its totient is φ = 137681038.

The previous prime is 137681021. The next prime is 137681051. The reversal of 137681039 is 930186731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137681039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 137680993 and 137681011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137681069) 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, 68840519 + 68840520.

It is an arithmetic number, because the mean of its divisors is an integer number (68840520).

Almost surely, 2^137681039 is an apocalyptic number.

137681039 is a deficient number, since it is larger than the sum of its proper divisors (1).

137681039 is an equidigital number, since it uses as much as digits as its factorization.

137681039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 137681039 is about 11733.7563891535. The cubic root of 137681039 is about 516.3664831829.

The spelling of 137681039 in words is "one hundred thirty-seven million, six hundred eighty-one thousand, thirty-nine".