16249165 has 4 divisors (see below), whose sum is σ = 19499004. Its totient is φ = 12999328.

The previous prime is 16249157. The next prime is 16249171. The reversal of 16249165 is 56194261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56194261 = 2441 ⋅23021.

It can be written as a sum of positive squares in 2 ways, for example, as 2802276 + 13446889 = 1674^2 + 3667^2 .

It is a cyclic number.

It is not a de Polignac number, because 16249165 - 2³ = 16249157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16249165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624912 + ... + 1624921.

It is an arithmetic number, because the mean of its divisors is an integer number (4874751).

Almost surely, 2^16249165 is an apocalyptic number.

It is an amenable number.

16249165 is a deficient number, since it is larger than the sum of its proper divisors (3249839).

16249165 is an equidigital number, since it uses as much as digits as its factorization.

16249165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249838.

The product of its digits is 12960, while the sum is 34.

The square root of 16249165 is about 4031.0253038154. The cubic root of 16249165 is about 253.2855124802.

The spelling of 16249165 in words is "sixteen million, two hundred forty-nine thousand, one hundred sixty-five".