2291689260 has 576 divisors, whose sum is σ = 8876335104. Its totient is φ = 485222400.

The previous prime is 2291689217. The next prime is 2291689271. The reversal of 2291689260 is 629861922.

2291689260 is a `hidden beast` number, since 229 + 168 + 9 + 260 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 43239394 + ... + 43239446.

It is an arithmetic number, because the mean of its divisors is an integer number (15410304).

Almost surely, 2^2291689260 is an apocalyptic number.

2291689260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291689260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4438167552).

2291689260 is an abundant number, since it is smaller than the sum of its proper divisors (6584645844).

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

2291689260 is a wasteful number, since it uses less digits than its factorization.

2291689260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2291689260 is about 47871.5913669057. The cubic root of 2291689260 is about 1318.4143149247.

The spelling of 2291689260 in words is "two billion, two hundred ninety-one million, six hundred eighty-nine thousand, two hundred sixty".