22943189 has 2 divisors, whose sum is σ = 22943190. Its totient is φ = 22943188.

The previous prime is 22943177. The next prime is 22943227. The reversal of 22943189 is 98134922.

It is an a-pointer prime, because the next prime (22943227) can be obtained adding 22943189 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22562500 + 380689 = 4750^2 + 617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22943189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22943159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11471594 + 11471595.

It is an arithmetic number, because the mean of its divisors is an integer number (11471595).

Almost surely, 2^22943189 is an apocalyptic number.

It is an amenable number.

22943189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22943189 is an equidigital number, since it uses as much as digits as its factorization.

22943189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 22943189 is about 4789.9049051103. The cubic root of 22943189 is about 284.1523557644.

It can be divided in two parts, 22943 and 189, that added together give a palindrome (23132).

The spelling of 22943189 in words is "twenty-two million, nine hundred forty-three thousand, one hundred eighty-nine".