2191258896 has 40 divisors (see below), whose sum is σ = 5667699744. Its totient is φ = 729523200.

The previous prime is 2191258873. The next prime is 2191258903. The reversal of 2191258896 is 6988521912.

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, 12096 + ... + 67296.

Almost surely, 2^2191258896 is an apocalyptic number.

It is an amenable number.

2191258896 is an abundant number, since it is smaller than the sum of its proper divisors (3476440848).

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

2191258896 is a wasteful number, since it uses less digits than its factorization.

2191258896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56039 (or 56033 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 2191258896 is about 46810.8843753245. The cubic root of 2191258896 is about 1298.8666445615.

It can be divided in two parts, 21912 and 58896, that added together give a palindrome (80808).

The spelling of 2191258896 in words is "two billion, one hundred ninety-one million, two hundred fifty-eight thousand, eight hundred ninety-six".