18263320730 has 8 divisors (see below), whose sum is σ = 32873977332. Its totient is φ = 7305328288.

The previous prime is 18263320697. The next prime is 18263320741. The reversal of 18263320730 is 3702336281.

It can be written as a sum of positive squares in 2 ways, for example, as 16556226241 + 1707094489 = 128671^2 + 41317^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913166027 + ... + 913166046.

Almost surely, 2^18263320730 is an apocalyptic number.

18263320730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18263320730 is a deficient number, since it is larger than the sum of its proper divisors (14610656602).

18263320730 is a wasteful number, since it uses less digits than its factorization.

18263320730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826332080.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 18263320730 in words is "eighteen billion, two hundred sixty-three million, three hundred twenty thousand, seven hundred thirty".