19391120012 has 48 divisors (see below), whose sum is σ = 37233665280. Its totient is φ = 8763278400.

The previous prime is 19391119981. The next prime is 19391120033. The reversal of 19391120012 is 21002119391.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6946337 + ... + 6949127.

It is an arithmetic number, because the mean of its divisors is an integer number (775701360).

Almost surely, 2^19391120012 is an apocalyptic number.

It is an amenable number.

19391120012 is a deficient number, since it is larger than the sum of its proper divisors (17842545268).

19391120012 is a wasteful number, since it uses less digits than its factorization.

19391120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662 (or 3660 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 19391120012 in words is "nineteen billion, three hundred ninety-one million, one hundred twenty thousand, twelve".