16161933 has 8 divisors (see below), whose sum is σ = 22131808. Its totient is φ = 10483344.

The previous prime is 16161931. The next prime is 16161953. The reversal of 16161933 is 33916161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16161933 - 2¹ = 16161931 is a prime.

It is a super-2 number, since 2×16161933² = 522416156592978, which contains 22 as substring.

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 16161933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72691 + ... + 72912.

It is an arithmetic number, because the mean of its divisors is an integer number (2766476).

Almost surely, 2^16161933 is an apocalyptic number.

It is an amenable number.

16161933 is a deficient number, since it is larger than the sum of its proper divisors (5969875).

16161933 is a wasteful number, since it uses less digits than its factorization.

16161933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145643.

The product of its digits is 2916, while the sum is 30.

The square root of 16161933 is about 4020.1906671202. The cubic root of 16161933 is about 252.8314530929.

The spelling of 16161933 in words is "sixteen million, one hundred sixty-one thousand, nine hundred thirty-three".