19496065818 has 32 divisors (see below), whose sum is σ = 39178598400. Its totient is φ = 6467686400.

The previous prime is 19496065811. The next prime is 19496065837. The reversal of 19496065818 is 81856069491.

It is not an unprimeable number, because it can be changed into a prime (19496065811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071271 + ... + 1089317.

It is an arithmetic number, because the mean of its divisors is an integer number (1224331200).

Almost surely, 2^19496065818 is an apocalyptic number.

19496065818 is an abundant number, since it is smaller than the sum of its proper divisors (19682532582).

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

19496065818 is a wasteful number, since it uses less digits than its factorization.

19496065818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18902.

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 19496065818 in words is "nineteen billion, four hundred ninety-six million, sixty-five thousand, eight hundred eighteen".