137765381 has 16 divisors (see below), whose sum is σ = 151421760. Its totient is φ = 124571520.

The previous prime is 137765359. The next prime is 137765387. The reversal of 137765381 is 183567731.

It is a cyclic number.

It is not a de Polignac number, because 137765381 - 2¹⁴ = 137748997 is a prime.

It is a super-2 number, since 2×137765381² = 37958600404150322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137765387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169466 + ... + 170276.

It is an arithmetic number, because the mean of its divisors is an integer number (9463860).

Almost surely, 2^137765381 is an apocalyptic number.

It is an amenable number.

137765381 is a deficient number, since it is larger than the sum of its proper divisors (13656379).

137765381 is a wasteful number, since it uses less digits than its factorization.

137765381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its digits is 105840, while the sum is 41.

The square root of 137765381 is about 11737.3498286453. The cubic root of 137765381 is about 516.4719019397.

The spelling of 137765381 in words is "one hundred thirty-seven million, seven hundred sixty-five thousand, three hundred eighty-one".