18799523823986 has 8 divisors (see below), whose sum is σ = 28201454783964. Its totient is φ = 9399038896000.

The previous prime is 18799523823953. The next prime is 18799523824001. The reversal of 18799523823986 is 68932832599781.

It can be written as a sum of positive squares in 2 ways, for example, as 14585868531025 + 4213655292961 = 3819145^2 + 2052719^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18799523823986.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361475495 + ... + 361527498.

Almost surely, 2^{18799523823986} is an apocalyptic number.

18799523823986 is a deficient number, since it is larger than the sum of its proper divisors (9401930959978).

18799523823986 is a wasteful number, since it uses less digits than its factorization.

18799523823986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723015996.

The product of its digits is 2821754880, while the sum is 80.

The spelling of 18799523823986 in words is "eighteen trillion, seven hundred ninety-nine billion, five hundred twenty-three million, eight hundred twenty-three thousand, nine hundred eighty-six".