22190857538 has 8 divisors (see below), whose sum is σ = 33287315520. Its totient is φ = 11095085700.

The previous prime is 22190857501. The next prime is 22190857573. The reversal of 22190857538 is 83575809122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22190857538² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 81158 + ... + 225761.

It is an arithmetic number, because the mean of its divisors is an integer number (4160914440).

Almost surely, 2^22190857538 is an apocalyptic number.

22190857538 is a deficient number, since it is larger than the sum of its proper divisors (11096457982).

22190857538 is a wasteful number, since it uses less digits than its factorization.

22190857538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343072.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 22190857538 in words is "twenty-two billion, one hundred ninety million, eight hundred fifty-seven thousand, five hundred thirty-eight".