137318449 has 2 divisors, whose sum is σ = 137318450. Its totient is φ = 137318448.

The previous prime is 137318431. The next prime is 137318483. The reversal of 137318449 is 944813731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85377600 + 51940849 = 9240^2 + 7207^2 .

It is a cyclic number.

It is not a de Polignac number, because 137318449 - 2⁵ = 137318417 is a prime.

It is not a weakly prime, because it can be changed into another prime (137358449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68659224 + 68659225.

It is an arithmetic number, because the mean of its divisors is an integer number (68659225).

Almost surely, 2^137318449 is an apocalyptic number.

It is an amenable number.

137318449 is a deficient number, since it is larger than the sum of its proper divisors (1).

137318449 is an equidigital number, since it uses as much as digits as its factorization.

137318449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 137318449 is about 11718.2954818523. The cubic root of 137318449 is about 515.9127922348.

The spelling of 137318449 in words is "one hundred thirty-seven million, three hundred eighteen thousand, four hundred forty-nine".