2191488846 has 16 divisors (see below), whose sum is σ = 4387799808. Its totient is φ = 729692600.

The previous prime is 2191488841. The next prime is 2191488847. The reversal of 2191488846 is 6488841912.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191488841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195000 + ... + 205931.

It is an arithmetic number, because the mean of its divisors is an integer number (274237488).

Almost surely, 2^2191488846 is an apocalyptic number.

2191488846 is an abundant number, since it is smaller than the sum of its proper divisors (2196310962).

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

2191488846 is a wasteful number, since it uses less digits than its factorization.

2191488846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401847.

The product of its digits is 884736, while the sum is 51.

The square root of 2191488846 is about 46813.3404704257. The cubic root of 2191488846 is about 1298.9120771876.

The spelling of 2191488846 in words is "two billion, one hundred ninety-one million, four hundred eighty-eight thousand, eight hundred forty-six".