18116903378 has 48 divisors (see below), whose sum is σ = 32937456384. Its totient is φ = 7443565920.

The previous prime is 18116903293. The next prime is 18116903401. The reversal of 18116903378 is 87330961181.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297200 + ... + 352932.

It is an arithmetic number, because the mean of its divisors is an integer number (686197008).

Almost surely, 2^18116903378 is an apocalyptic number.

18116903378 is a deficient number, since it is larger than the sum of its proper divisors (14820553006).

18116903378 is a wasteful number, since it uses less digits than its factorization.

18116903378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55887 (or 55880 counting only the distinct ones).

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

The spelling of 18116903378 in words is "eighteen billion, one hundred sixteen million, nine hundred three thousand, three hundred seventy-eight".