19918012024 has 16 divisors (see below), whose sum is σ = 37351051200. Its totient is φ = 9957731712.

The previous prime is 19918012003. The next prime is 19918012031. The reversal of 19918012024 is 42021081991.

It is a congruent 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, 91144 + ... + 219415.

It is an arithmetic number, because the mean of its divisors is an integer number (2334440700).

Almost surely, 2^19918012024 is an apocalyptic number.

It is an amenable number.

19918012024 is a deficient number, since it is larger than the sum of its proper divisors (17433039176).

19918012024 is a wasteful number, since it uses less digits than its factorization.

19918012024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318582 (or 318578 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 19918012024 in words is "nineteen billion, nine hundred eighteen million, twelve thousand, twenty-four".