137488649 has 2 divisors, whose sum is σ = 137488650. Its totient is φ = 137488648.

The previous prime is 137488609. The next prime is 137488657. The reversal of 137488649 is 946884731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78198649 + 59290000 = 8843^2 + 7700^2 .

It is a cyclic number.

It is not a de Polignac number, because 137488649 - 2¹⁶ = 137423113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 137488597 and 137488606.

It is not a weakly prime, because it can be changed into another prime (137488609) 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, 68744324 + 68744325.

It is an arithmetic number, because the mean of its divisors is an integer number (68744325).

Almost surely, 2^137488649 is an apocalyptic number.

It is an amenable number.

137488649 is a deficient number, since it is larger than the sum of its proper divisors (1).

137488649 is an equidigital number, since it uses as much as digits as its factorization.

137488649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 137488649 is about 11725.5553813028. Note that the first 3 decimals coincide. The cubic root of 137488649 is about 516.1258544142.

The spelling of 137488649 in words is "one hundred thirty-seven million, four hundred eighty-eight thousand, six hundred forty-nine".