137501389 has 8 divisors (see below), whose sum is σ = 145725048. Its totient is φ = 129292800.

The previous prime is 137501387. The next prime is 137501393. The reversal of 137501389 is 983105731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11276164 + 126225225 = 3358^2 + 11235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137501389 - 2¹ = 137501387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137501387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19009 + ... + 25225.

It is an arithmetic number, because the mean of its divisors is an integer number (18215631).

Almost surely, 2^137501389 is an apocalyptic number.

It is an amenable number.

137501389 is a deficient number, since it is larger than the sum of its proper divisors (8223659).

137501389 is a wasteful number, since it uses less digits than its factorization.

137501389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 137501389 is about 11726.0986265680. The cubic root of 137501389 is about 516.1417957067.

The spelling of 137501389 in words is "one hundred thirty-seven million, five hundred one thousand, three hundred eighty-nine".