19914934572 has 36 divisors (see below), whose sum is σ = 54212878720. Its totient is φ = 6127672032.

The previous prime is 19914934561. The next prime is 19914934573. The reversal of 19914934572 is 27543941991.

19914934572 is a `hidden beast` number, since 1 + 99 + 14 + 93 + 457 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (19914934573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21276172 + ... + 21277107.

Almost surely, 2^19914934572 is an apocalyptic number.

19914934572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19914934572 is an abundant number, since it is smaller than the sum of its proper divisors (34297944148).

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

19914934572 is a wasteful number, since it uses less digits than its factorization.

19914934572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42553302 (or 42553297 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 19914934572 in words is "nineteen billion, nine hundred fourteen million, nine hundred thirty-four thousand, five hundred seventy-two".