1376609137 has 2 divisors, whose sum is σ = 1376609138. Its totient is φ = 1376609136.

The previous prime is 1376609123. The next prime is 1376609141. The reversal of 1376609137 is 7319066731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 968205456 + 408403681 = 31116^2 + 20209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1376609137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1376609093 and 1376609102.

It is not a weakly prime, because it can be changed into another prime (1376609737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688304568 + 688304569.

It is an arithmetic number, because the mean of its divisors is an integer number (688304569).

Almost surely, 2^1376609137 is an apocalyptic number.

It is an amenable number.

1376609137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376609137 is an equidigital number, since it uses as much as digits as its factorization.

1376609137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 1376609137 is about 37102.6836899974. The cubic root of 1376609137 is about 1112.4236566221.

The spelling of 1376609137 in words is "one billion, three hundred seventy-six million, six hundred nine thousand, one hundred thirty-seven".