165152623 has 4 divisors (see below), whose sum is σ = 167951880. Its totient is φ = 162353368.

The previous prime is 165152599. The next prime is 165152629. The reversal of 165152623 is 326251561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326251561 = 463 ⋅704647.

It is not a de Polignac number, because 165152623 - 2²⁵ = 131598191 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 (165152629) 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, 1399540 + ... + 1399657.

It is an arithmetic number, because the mean of its divisors is an integer number (41987970).

Almost surely, 2^165152623 is an apocalyptic number.

165152623 is a deficient number, since it is larger than the sum of its proper divisors (2799257).

165152623 is an equidigital number, since it uses as much as digits as its factorization.

165152623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799256.

The product of its digits is 10800, while the sum is 31.

The square root of 165152623 is about 12851.1720477161. The cubic root of 165152623 is about 548.6497157803.

The spelling of 165152623 in words is "one hundred sixty-five million, one hundred fifty-two thousand, six hundred twenty-three".