2291191472 has 10 divisors (see below), whose sum is σ = 4439183508. Its totient is φ = 1145595728.

The previous prime is 2291191457. The next prime is 2291191477. The reversal of 2291191472 is 2741911922.

It is a super-2 number, since 2×2291191472² = 10499116722731053568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2291191477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71599718 + ... + 71599749.

Almost surely, 2^2291191472 is an apocalyptic number.

It is an amenable number.

2291191472 is a deficient number, since it is larger than the sum of its proper divisors (2147992036).

2291191472 is a wasteful number, since it uses less digits than its factorization.

2291191472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143199475 (or 143199469 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 2291191472 is about 47866.3918840767. The cubic root of 2291191472 is about 1318.3188484696.

The spelling of 2291191472 in words is "two billion, two hundred ninety-one million, one hundred ninety-one thousand, four hundred seventy-two".