19494637120 has 112 divisors (see below), whose sum is σ = 56174152320. Its totient is φ = 6290694144.

The previous prime is 19494637093. The next prime is 19494637139. The reversal of 19494637120 is 2173649491.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217890 + ... + 294049.

Almost surely, 2^19494637120 is an apocalyptic number.

19494637120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19494637120 is an abundant number, since it is smaller than the sum of its proper divisors (36679515200).

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

19494637120 is a wasteful number, since it uses less digits than its factorization.

19494637120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511980 (or 511970 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 19494637120 in words is "nineteen billion, four hundred ninety-four million, six hundred thirty-seven thousand, one hundred twenty".