8219590491 has 16 divisors (see below), whose sum is σ = 13261860864. Its totient is φ = 4420619904.

The previous prime is 8219590469. The next prime is 8219590493. The reversal of 8219590491 is 1940959128.

It is not a de Polignac number, because 8219590491 - 2⁶ = 8219590427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8219590491.

It is not an unprimeable number, because it can be changed into a prime (8219590493) 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, 11511675 + ... + 11512388.

It is an arithmetic number, because the mean of its divisors is an integer number (828866304).

Almost surely, 2^8219590491 is an apocalyptic number.

8219590491 is a deficient number, since it is larger than the sum of its proper divisors (5042270373).

8219590491 is a wasteful number, since it uses less digits than its factorization.

8219590491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024090.

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 8219590491 is about 90661.9572422744. The cubic root of 8219590491 is about 2018.1342844880.

The spelling of 8219590491 in words is "eight billion, two hundred nineteen million, five hundred ninety thousand, four hundred ninety-one".