165654137 has 16 divisors (see below), whose sum is σ = 191771712. Its totient is φ = 141419520.

The previous prime is 165654133. The next prime is 165654157. The reversal of 165654137 is 731456561.

It is not a de Polignac number, because 165654137 - 2² = 165654133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165654137.

It is not an unprimeable number, because it can be changed into a prime (165654133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127073 + ... + 128369.

It is an arithmetic number, because the mean of its divisors is an integer number (11985732).

Almost surely, 2^165654137 is an apocalyptic number.

165654137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

165654137 is a deficient number, since it is larger than the sum of its proper divisors (26117575).

165654137 is a wasteful number, since it uses less digits than its factorization.

165654137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its digits is 75600, while the sum is 38.

The square root of 165654137 is about 12870.6696406986. The cubic root of 165654137 is about 549.2045106092.

It can be divided in two parts, 16565 and 4137, that added together give a palindrome (20702).

The spelling of 165654137 in words is "one hundred sixty-five million, six hundred fifty-four thousand, one hundred thirty-seven".