18940076894 has 16 divisors (see below), whose sum is σ = 28625251200. Its totient is φ = 9398377944.

The previous prime is 18940076893. The next prime is 18940076899. The reversal of 18940076894 is 49867004981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18940076893) 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, 827999 + ... + 850565.

It is an arithmetic number, because the mean of its divisors is an integer number (1789078200).

Almost surely, 2^18940076894 is an apocalyptic number.

18940076894 is a deficient number, since it is larger than the sum of its proper divisors (9685174306).

18940076894 is a wasteful number, since it uses less digits than its factorization.

18940076894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25727.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 18940076894 in words is "eighteen billion, nine hundred forty million, seventy-six thousand, eight hundred ninety-four".