22153189 has 4 divisors (see below), whose sum is σ = 22867840. Its totient is φ = 21438540.

The previous prime is 22153177. The next prime is 22153199. The reversal of 22153189 is 98135122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98135122 = 2 ⋅49067561.

It is a cyclic number.

It is not a de Polignac number, because 22153189 - 2²³ = 13764581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 714619 = 22153189 / (2 + 2 + 1 + 5 + 3 + 1 + 8 + 9).

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 22153189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153139) 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, 357279 + ... + 357340.

It is an arithmetic number, because the mean of its divisors is an integer number (5716960).

Almost surely, 2^22153189 is an apocalyptic number.

It is an amenable number.

22153189 is a deficient number, since it is larger than the sum of its proper divisors (714651).

22153189 is an equidigital number, since it uses as much as digits as its factorization.

22153189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714650.

The product of its digits is 4320, while the sum is 31.

The square root of 22153189 is about 4706.7174336261. The cubic root of 22153189 is about 280.8527954140.

The spelling of 22153189 in words is "twenty-two million, one hundred fifty-three thousand, one hundred eighty-nine".