19279981012 has 12 divisors (see below), whose sum is σ = 35206922016. Its totient is φ = 9220860440.

The previous prime is 19279980983. The next prime is 19279981051. The reversal of 19279981012 is 21018997291.

It is a happy number.

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, 104782414 + ... + 104782597.

It is an arithmetic number, because the mean of its divisors is an integer number (2933910168).

Almost surely, 2^19279981012 is an apocalyptic number.

It is an amenable number.

19279981012 is a deficient number, since it is larger than the sum of its proper divisors (15926941004).

19279981012 is a wasteful number, since it uses less digits than its factorization.

19279981012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209565038 (or 209565036 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 19279981012 in words is "nineteen billion, two hundred seventy-nine million, nine hundred eighty-one thousand, twelve".