18903318716 has 12 divisors (see below), whose sum is σ = 33104295840. Its totient is φ = 9444948480.

The previous prime is 18903318703. The next prime is 18903318743. The reversal of 18903318716 is 61781330981.

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 in 3 ways as a sum of consecutive naturals, for example, 1671380 + ... + 1682651.

It is an arithmetic number, because the mean of its divisors is an integer number (2758691320).

Almost surely, 2^18903318716 is an apocalyptic number.

It is an amenable number.

18903318716 is a deficient number, since it is larger than the sum of its proper divisors (14200977124).

18903318716 is a wasteful number, since it uses less digits than its factorization.

18903318716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355444 (or 3355442 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 18903318716 in words is "eighteen billion, nine hundred three million, three hundred eighteen thousand, seven hundred sixteen".