165868045 has 16 divisors (see below), whose sum is σ = 230595840. Its totient is φ = 112178304.

The previous prime is 165868039. The next prime is 165868061. The reversal of 165868045 is 540868561.

165868045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165868045 - 2⁵ = 165868013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165867992 and 165868010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29905 + ... + 35014.

It is an arithmetic number, because the mean of its divisors is an integer number (14412240).

Almost surely, 2^165868045 is an apocalyptic number.

It is an amenable number.

165868045 is a deficient number, since it is larger than the sum of its proper divisors (64727795).

165868045 is an equidigital number, since it uses as much as digits as its factorization.

165868045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65004.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 165868045 is about 12878.9768615368. The cubic root of 165868045 is about 549.4408035468.

The spelling of 165868045 in words is "one hundred sixty-five million, eight hundred sixty-eight thousand, forty-five".