18942407886 has 16 divisors (see below), whose sum is σ = 38183122944. Its totient is φ = 6264418104.

The previous prime is 18942407849. The next prime is 18942407917. The reversal of 18942407886 is 68870424981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12428640 + ... + 12430163.

It is an arithmetic number, because the mean of its divisors is an integer number (2386445184).

Almost surely, 2^18942407886 is an apocalyptic number.

18942407886 is an abundant number, since it is smaller than the sum of its proper divisors (19240715058).

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

18942407886 is a wasteful number, since it uses less digits than its factorization.

18942407886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24858935.

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 18942407886 in words is "eighteen billion, nine hundred forty-two million, four hundred seven thousand, eight hundred eighty-six".