18426994986 has 8 divisors (see below), whose sum is σ = 36853989984. Its totient is φ = 6142331660.

The previous prime is 18426994969. The next prime is 18426995021. The reversal of 18426994986 is 68949962481.

18426994986 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

18426994986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535582910 + ... + 1535582921.

It is an arithmetic number, because the mean of its divisors is an integer number (4606748748).

Almost surely, 2^18426994986 is an apocalyptic number.

18426994986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18426994986 is a wasteful number, since it uses less digits than its factorization.

18426994986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071165836.

The product of its digits is 53747712, while the sum is 66.

The spelling of 18426994986 in words is "eighteen billion, four hundred twenty-six million, nine hundred ninety-four thousand, nine hundred eighty-six".