18303054398 has 4 divisors (see below), whose sum is σ = 27454581600. Its totient is φ = 9151527198.

The previous prime is 18303054389. The next prime is 18303054421. The reversal of 18303054398 is 89345030381.

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

It is a super-2 number, since 2×18303054398² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4575763598 + ... + 4575763601.

It is an arithmetic number, because the mean of its divisors is an integer number (6863645400).

Almost surely, 2^18303054398 is an apocalyptic number.

18303054398 is a deficient number, since it is larger than the sum of its proper divisors (9151527202).

18303054398 is an equidigital number, since it uses as much as digits as its factorization.

18303054398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9151527201.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 18303054398 in words is "eighteen billion, three hundred three million, fifty-four thousand, three hundred ninety-eight".