18690019322 has 16 divisors (see below), whose sum is σ = 30761224200. Its totient is φ = 8463404352.

The previous prime is 18690019301. The next prime is 18690019333. The reversal of 18690019322 is 22391009681.

It can be written as a sum of positive squares in 4 ways, for example, as 18189647161 + 500372161 = 134869^2 + 22369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18690019322.

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 7 ways as a sum of consecutive naturals, for example, 6780197 + ... + 6782952.

Almost surely, 2^18690019322 is an apocalyptic number.

18690019322 is a deficient number, since it is larger than the sum of its proper divisors (12071204878).

18690019322 is a wasteful number, since it uses less digits than its factorization.

18690019322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13563217.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 18690019322 in words is "eighteen billion, six hundred ninety million, nineteen thousand, three hundred twenty-two".