18845427986 has 16 divisors (see below), whose sum is σ = 35243398080. Its totient is φ = 7342374480.

The previous prime is 18845427983. The next prime is 18845428001. The reversal of 18845427986 is 68972454881.

It is not an unprimeable number, because it can be changed into a prime (18845427983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61186301 + ... + 61186608.

It is an arithmetic number, because the mean of its divisors is an integer number (2202712380).

Almost surely, 2^18845427986 is an apocalyptic number.

18845427986 is a deficient number, since it is larger than the sum of its proper divisors (16397970094).

18845427986 is a wasteful number, since it uses less digits than its factorization.

18845427986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122372929.

The product of its digits is 30965760, while the sum is 62.

The spelling of 18845427986 in words is "eighteen billion, eight hundred forty-five million, four hundred twenty-seven thousand, nine hundred eighty-six".