137373109 has 2 divisors, whose sum is σ = 137373110. Its totient is φ = 137373108.

The previous prime is 137373017. The next prime is 137373113. The reversal of 137373109 is 901373731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77264100 + 60109009 = 8790^2 + 7753^2 .

It is an emirp because it is prime and its reverse (901373731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137373109 - 2²¹ = 135275957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137373139) 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, 68686554 + 68686555.

It is an arithmetic number, because the mean of its divisors is an integer number (68686555).

Almost surely, 2^137373109 is an apocalyptic number.

It is an amenable number.

137373109 is a deficient number, since it is larger than the sum of its proper divisors (1).

137373109 is an equidigital number, since it uses as much as digits as its factorization.

137373109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 137373109 is about 11720.6275002664. The cubic root of 137373109 is about 515.9812366732.

The spelling of 137373109 in words is "one hundred thirty-seven million, three hundred seventy-three thousand, one hundred nine".