18945302308 has 24 divisors (see below), whose sum is σ = 34802957952. Its totient is φ = 9006533184.

The previous prime is 18945302303. The next prime is 18945302371. The reversal of 18945302308 is 80320354981.

It is not an unprimeable number, because it can be changed into a prime (18945302303) 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, 601185 + ... + 631912.

It is an arithmetic number, because the mean of its divisors is an integer number (1450123248).

Almost surely, 2^18945302308 is an apocalyptic number.

It is an amenable number.

18945302308 is a deficient number, since it is larger than the sum of its proper divisors (15857655644).

18945302308 is a wasteful number, since it uses less digits than its factorization.

18945302308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233291 (or 1233289 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 18945302308 in words is "eighteen billion, nine hundred forty-five million, three hundred two thousand, three hundred eight".