19457183491 has 16 divisors (see below), whose sum is σ = 20991670560. Its totient is φ = 17974206720.

The previous prime is 19457183483. The next prime is 19457183503. The reversal of 19457183491 is 19438175491.

It is not a de Polignac number, because 19457183491 - 2³ = 19457183483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19457163491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830805 + ... + 1841401.

It is an arithmetic number, because the mean of its divisors is an integer number (1311979410).

Almost surely, 2^19457183491 is an apocalyptic number.

19457183491 is a deficient number, since it is larger than the sum of its proper divisors (1534487069).

19457183491 is a wasteful number, since it uses less digits than its factorization.

19457183491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13014.

The product of its digits is 1088640, while the sum is 52.

The spelling of 19457183491 in words is "nineteen billion, four hundred fifty-seven million, one hundred eighty-three thousand, four hundred ninety-one".