19391111102 has 16 divisors (see below), whose sum is σ = 31746822912. Its totient is φ = 8809720920.

The previous prime is 19391111023. The next prime is 19391111213. The reversal of 19391111102 is 20111119391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175958 + ... + 264089.

It is an arithmetic number, because the mean of its divisors is an integer number (1984176432).

Almost surely, 2^19391111102 is an apocalyptic number.

19391111102 is a deficient number, since it is larger than the sum of its proper divisors (12355711810).

19391111102 is a wasteful number, since it uses less digits than its factorization.

19391111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442063.

The product of its (nonzero) digits is 486, while the sum is 29.

The spelling of 19391111102 in words is "nineteen billion, three hundred ninety-one million, one hundred eleven thousand, one hundred two".