19418474994 has 16 divisors (see below), whose sum is σ = 40176155520. Its totient is φ = 6249624080.

The previous prime is 19418474993. The next prime is 19418475031. The reversal of 19418474994 is 49947481491.

It is not an unprimeable number, because it can be changed into a prime (19418474993) 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, 55800042 + ... + 55800389.

It is an arithmetic number, because the mean of its divisors is an integer number (2511009720).

Almost surely, 2^19418474994 is an apocalyptic number.

19418474994 is an abundant number, since it is smaller than the sum of its proper divisors (20757680526).

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

19418474994 is a wasteful number, since it uses less digits than its factorization.

19418474994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111600465.

The product of its digits is 10450944, while the sum is 60.

The spelling of 19418474994 in words is "nineteen billion, four hundred eighteen million, four hundred seventy-four thousand, nine hundred ninety-four".