165474440 has 16 divisors (see below), whose sum is σ = 372317580. Its totient is φ = 66189760.

The previous prime is 165474433. The next prime is 165474457. The reversal of 165474440 is 44474561.

It can be written as a sum of positive squares in 2 ways, for example, as 162154756 + 3319684 = 12734^2 + 1822^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 165474440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068391 + ... + 2068470.

Almost surely, 2^165474440 is an apocalyptic number.

165474440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165474440 is an abundant number, since it is smaller than the sum of its proper divisors (206843140).

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

165474440 is a wasteful number, since it uses less digits than its factorization.

165474440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136872 (or 4136868 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 165474440 is about 12863.6868742985. The cubic root of 165474440 is about 549.0058514997.

The spelling of 165474440 in words is "one hundred sixty-five million, four hundred seventy-four thousand, four hundred forty".