22738189 has 2 divisors, whose sum is σ = 22738190. Its totient is φ = 22738188.

The previous prime is 22738181. The next prime is 22738211. The reversal of 22738189 is 98183722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22610025 + 128164 = 4755^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 22738189 - 2³ = 22738181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22738181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11369094 + 11369095.

It is an arithmetic number, because the mean of its divisors is an integer number (11369095).

Almost surely, 2^22738189 is an apocalyptic number.

It is an amenable number.

22738189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22738189 is an equidigital number, since it uses as much as digits as its factorization.

22738189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 22738189 is about 4768.4577171241. The cubic root of 22738189 is about 283.3035113557.

It can be divided in two parts, 227 and 38189, that added together give a 4-th power (38416 = 14⁴).

The spelling of 22738189 in words is "twenty-two million, seven hundred thirty-eight thousand, one hundred eighty-nine".