165422818 has 48 divisors (see below), whose sum is σ = 294096096. Its totient is φ = 68958720.

The previous prime is 165422813. The next prime is 165422821. The reversal of 165422818 is 818224561.

165422818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165422818² = 54729417430122248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165422813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1993005 + ... + 1993087.

It is an arithmetic number, because the mean of its divisors is an integer number (6127002).

Almost surely, 2^165422818 is an apocalyptic number.

165422818 is a deficient number, since it is larger than the sum of its proper divisors (128673278).

165422818 is a wasteful number, since it uses less digits than its factorization.

165422818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 186 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 165422818 is about 12861.6802168301. The cubic root of 165422818 is about 548.9487556170.

The spelling of 165422818 in words is "one hundred sixty-five million, four hundred twenty-two thousand, eight hundred eighteen".