18805730366 has 4 divisors (see below), whose sum is σ = 28208595552. Its totient is φ = 9402865182.

The previous prime is 18805730347. The next prime is 18805730389. The reversal of 18805730366 is 66303750881.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18805730366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4701432590 + ... + 4701432593.

It is an arithmetic number, because the mean of its divisors is an integer number (7052148888).

Almost surely, 2^18805730366 is an apocalyptic number.

18805730366 is a deficient number, since it is larger than the sum of its proper divisors (9402865186).

18805730366 is an equidigital number, since it uses as much as digits as its factorization.

18805730366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402865185.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 18805730366 in words is "eighteen billion, eight hundred five million, seven hundred thirty thousand, three hundred sixty-six".