137810165 has 4 divisors (see below), whose sum is σ = 165372204. Its totient is φ = 110248128.

The previous prime is 137810161. The next prime is 137810191. The reversal of 137810165 is 561018731.

137810165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73393489 + 64416676 = 8567^2 + 8026^2 .

It is a cyclic number.

It is not a de Polignac number, because 137810165 - 2² = 137810161 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 (137810161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13781012 + ... + 13781021.

It is an arithmetic number, because the mean of its divisors is an integer number (41343051).

Almost surely, 2^137810165 is an apocalyptic number.

It is an amenable number.

137810165 is a deficient number, since it is larger than the sum of its proper divisors (27562039).

137810165 is an equidigital number, since it uses as much as digits as its factorization.

137810165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27562038.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 137810165 is about 11739.2574296673. The cubic root of 137810165 is about 516.5278598096.

Adding to 137810165 its reverse (561018731), we get a palindrome (698828896).

The spelling of 137810165 in words is "one hundred thirty-seven million, eight hundred ten thousand, one hundred sixty-five".