22361869 has 2 divisors, whose sum is σ = 22361870. Its totient is φ = 22361868.

The previous prime is 22361863. The next prime is 22361887. The reversal of 22361869 is 96816322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20811844 + 1550025 = 4562^2 + 1245^2 .

It is a cyclic number.

It is not a de Polignac number, because 22361869 - 2³ = 22361861 is a prime.

It is a super-2 number, since 2×22361869² = 1000106370346322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22361861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11180934 + 11180935.

It is an arithmetic number, because the mean of its divisors is an integer number (11180935).

Almost surely, 2^22361869 is an apocalyptic number.

It is an amenable number.

22361869 is a deficient number, since it is larger than the sum of its proper divisors (1).

22361869 is an equidigital number, since it uses as much as digits as its factorization.

22361869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 22361869 is about 4728.8337885783. The cubic root of 22361869 is about 281.7319057283.

The spelling of 22361869 in words is "twenty-two million, three hundred sixty-one thousand, eight hundred sixty-nine".