165275418 has 32 divisors (see below), whose sum is σ = 412116480. Its totient is φ = 42928560.

The previous prime is 165275417. The next prime is 165275423. The reversal of 165275418 is 814572561.

It is not an unprimeable number, because it can be changed into a prime (165275417) 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, 178408 + ... + 179331.

It is an arithmetic number, because the mean of its divisors is an integer number (12878640).

Almost surely, 2^165275418 is an apocalyptic number.

165275418 is an abundant number, since it is smaller than the sum of its proper divisors (246841062).

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

165275418 is a wasteful number, since it uses less digits than its factorization.

165275418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357762.

The product of its digits is 67200, while the sum is 39.

The square root of 165275418 is about 12855.9487397858. The cubic root of 165275418 is about 548.7856602380.

It can be divided in two parts, 16527 and 5418, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 165275418 in words is "one hundred sixty-five million, two hundred seventy-five thousand, four hundred eighteen".