137445379 has 2 divisors, whose sum is σ = 137445380. Its totient is φ = 137445378.

The previous prime is 137445361. The next prime is 137445389. The reversal of 137445379 is 973544731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137445379 - 2⁷ = 137445251 is a prime.

It is not a weakly prime, because it can be changed into another prime (137445359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68722689 + 68722690.

It is an arithmetic number, because the mean of its divisors is an integer number (68722690).

Almost surely, 2^137445379 is an apocalyptic number.

137445379 is a deficient number, since it is larger than the sum of its proper divisors (1).

137445379 is an equidigital number, since it uses as much as digits as its factorization.

137445379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 137445379 is about 11723.7101209472. The cubic root of 137445379 is about 516.0717042253.

The spelling of 137445379 in words is "one hundred thirty-seven million, four hundred forty-five thousand, three hundred seventy-nine".