137626389 has 12 divisors (see below), whose sum is σ = 201517836. Its totient is φ = 90493632.

The previous prime is 137626369. The next prime is 137626439. The reversal of 137626389 is 983626731.

137626389 is a `hidden beast` number, since 1 + 3 + 7 + 6 + 2 + 638 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80245764 + 57380625 = 8958^2 + 7575^2 .

It is not a de Polignac number, because 137626389 - 2⁷ = 137626261 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137626369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104082 + ... + 105395.

It is an arithmetic number, because the mean of its divisors is an integer number (16793153).

Almost surely, 2^137626389 is an apocalyptic number.

It is an amenable number.

137626389 is a deficient number, since it is larger than the sum of its proper divisors (63891447).

137626389 is a wasteful number, since it uses less digits than its factorization.

137626389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209556 (or 209553 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 137626389 is about 11731.4274067566. The cubic root of 137626389 is about 516.2981533604.

The spelling of 137626389 in words is "one hundred thirty-seven million, six hundred twenty-six thousand, three hundred eighty-nine".