22157092189 has 4 divisors (see below), whose sum is σ = 22157736156. Its totient is φ = 22156448224.

The previous prime is 22157092187. The next prime is 22157092201. The reversal of 22157092189 is 98129075122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16877907225 + 5279184964 = 129915^2 + 72658^2 .

It is a cyclic number.

It is not a de Polignac number, because 22157092189 - 2¹ = 22157092187 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 (22157092187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267274 + ... + 340219.

It is an arithmetic number, because the mean of its divisors is an integer number (5539434039).

Almost surely, 2^22157092189 is an apocalyptic number.

It is an amenable number.

22157092189 is a deficient number, since it is larger than the sum of its proper divisors (643967).

22157092189 is an equidigital number, since it uses as much as digits as its factorization.

22157092189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643966.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 22157092189 in words is "twenty-two billion, one hundred fifty-seven million, ninety-two thousand, one hundred eighty-nine".