12819907191 has 72 divisors (see below), whose sum is σ = 21829162320. Its totient is φ = 6668573184.

The previous prime is 12819907171. The next prime is 12819907229. The reversal of 12819907191 is 19170991821.

It is not a de Polignac number, because 12819907191 - 2⁵ = 12819907159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12819907191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12819907151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1810005 + ... + 1817073.

It is an arithmetic number, because the mean of its divisors is an integer number (303182810).

Almost surely, 2^12819907191 is an apocalyptic number.

12819907191 is a deficient number, since it is larger than the sum of its proper divisors (9009255129).

12819907191 is a wasteful number, since it uses less digits than its factorization.

12819907191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7185 (or 7165 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 48.

The spelling of 12819907191 in words is "twelve billion, eight hundred nineteen million, nine hundred seven thousand, one hundred ninety-one".