137440165 has 8 divisors (see below), whose sum is σ = 165916800. Its totient is φ = 109293072.

The previous prime is 137440153. The next prime is 137440187. The reversal of 137440165 is 561044731.

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 137440165 - 2¹⁵ = 137407397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81465 + ... + 83134.

It is an arithmetic number, because the mean of its divisors is an integer number (20739600).

Almost surely, 2^137440165 is an apocalyptic number.

It is an amenable number.

137440165 is a deficient number, since it is larger than the sum of its proper divisors (28476635).

137440165 is a wasteful number, since it uses less digits than its factorization.

137440165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164771.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 137440165 is about 11723.4877489594. The cubic root of 137440165 is about 516.0651784041.

Adding to 137440165 its reverse (561044731), we get a palindrome (698484896).

The spelling of 137440165 in words is "one hundred thirty-seven million, four hundred forty thousand, one hundred sixty-five".