165350123 has 4 divisors (see below), whose sum is σ = 166955568. Its totient is φ = 163744680.

The previous prime is 165350117. The next prime is 165350147. The reversal of 165350123 is 321053561.

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

It is a cyclic number.

It is not a de Polignac number, because 165350123 - 2⁸ = 165349867 is a prime.

It is a super-2 number, since 2×165350123² = 54681326352230258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165350092 and 165350101.

It is not an unprimeable number, because it can be changed into a prime (165350153) 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, 802568 + ... + 802773.

It is an arithmetic number, because the mean of its divisors is an integer number (41738892).

Almost surely, 2^165350123 is an apocalyptic number.

165350123 is a deficient number, since it is larger than the sum of its proper divisors (1605445).

165350123 is a wasteful number, since it uses less digits than its factorization.

165350123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605444.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 165350123 is about 12858.8538758320. The cubic root of 165350123 is about 548.8683320550.

The spelling of 165350123 in words is "one hundred sixty-five million, three hundred fifty thousand, one hundred twenty-three".