12919495818 has 16 divisors (see below), whose sum is σ = 25961453856. Its totient is φ = 4286088240.

The previous prime is 12919495781. The next prime is 12919495847. The reversal of 12919495818 is 81859491921.

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, 5101221 + ... + 5103752.

It is an arithmetic number, because the mean of its divisors is an integer number (1622590866).

Almost surely, 2^12919495818 is an apocalyptic number.

12919495818 is an abundant number, since it is smaller than the sum of its proper divisors (13041958038).

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

12919495818 is a wasteful number, since it uses less digits than its factorization.

12919495818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10205189.

The product of its digits is 1866240, while the sum is 57.

The spelling of 12919495818 in words is "twelve billion, nine hundred nineteen million, four hundred ninety-five thousand, eight hundred eighteen".