22915189 has 4 divisors (see below), whose sum is σ = 24998400. Its totient is φ = 20831980.

The previous prime is 22915181. The next prime is 22915219. The reversal of 22915189 is 98151922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22915189 - 2³ = 22915181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22915181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041589 + ... + 1041610.

It is an arithmetic number, because the mean of its divisors is an integer number (6249600).

Almost surely, 2^22915189 is an apocalyptic number.

It is an amenable number.

22915189 is a deficient number, since it is larger than the sum of its proper divisors (2083211).

22915189 is a wasteful number, since it uses less digits than its factorization.

22915189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083210.

The product of its digits is 12960, while the sum is 37.

The square root of 22915189 is about 4786.9811990439. The cubic root of 22915189 is about 284.0367149849.

It can be divided in two parts, 22915 and 189, that added together give a square (23104 = 152²).

The spelling of 22915189 in words is "twenty-two million, nine hundred fifteen thousand, one hundred eighty-nine".