165418428 has 48 divisors (see below), whose sum is σ = 441745920. Its totient is φ = 47194944.

The previous prime is 165418423. The next prime is 165418433. The reversal of 165418428 is 824814561.

It is an interprime number because it is at equal distance from previous prime (165418423) and next prime (165418433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165418423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110050 + ... + 111542.

It is an arithmetic number, because the mean of its divisors is an integer number (9203040).

Almost surely, 2^165418428 is an apocalyptic number.

It is an amenable number.

165418428 is an abundant number, since it is smaller than the sum of its proper divisors (276327492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165418428 is a wasteful number, since it uses less digits than its factorization.

165418428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2824 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 165418428 is about 12861.5095537033. The cubic root of 165418428 is about 548.9438995631.

The spelling of 165418428 in words is "one hundred sixty-five million, four hundred eighteen thousand, four hundred twenty-eight".