18629359186 has 16 divisors (see below), whose sum is σ = 29662355736. Its totient is φ = 8744668416.

The previous prime is 18629359181. The next prime is 18629359193. The reversal of 18629359186 is 68195392681.

It can be written as a sum of positive squares in 4 ways, for example, as 15667278561 + 2962080625 = 125169^2 + 54425^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18629359186.

It is not an unprimeable number, because it can be changed into a prime (18629359181) 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 7 ways as a sum of consecutive naturals, for example, 676581 + ... + 703576.

Almost surely, 2^18629359186 is an apocalyptic number.

18629359186 is a deficient number, since it is larger than the sum of its proper divisors (11032996550).

18629359186 is a wasteful number, since it uses less digits than its factorization.

18629359186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380573.

The product of its digits is 5598720, while the sum is 58.

The spelling of 18629359186 in words is "eighteen billion, six hundred twenty-nine million, three hundred fifty-nine thousand, one hundred eighty-six".