137169649 has 2 divisors, whose sum is σ = 137169650. Its totient is φ = 137169648.

The previous prime is 137169601. The next prime is 137169661. The reversal of 137169649 is 946961731.

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., 114062400 + 23107249 = 10680^2 + 4807^2 .

It is a cyclic number.

It is not a de Polignac number, because 137169649 - 2²⁵ = 103615217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137169599 and 137169608.

It is not a weakly prime, because it can be changed into another prime (137169689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68584824 + 68584825.

It is an arithmetic number, because the mean of its divisors is an integer number (68584825).

Almost surely, 2^137169649 is an apocalyptic number.

It is an amenable number.

137169649 is a deficient number, since it is larger than the sum of its proper divisors (1).

137169649 is an equidigital number, since it uses as much as digits as its factorization.

137169649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 137169649 is about 11711.9447146919. The cubic root of 137169649 is about 515.7263750185.

The spelling of 137169649 in words is "one hundred thirty-seven million, one hundred sixty-nine thousand, six hundred forty-nine".