2291820889 has 8 divisors (see below), whose sum is σ = 2328318720. Its totient is φ = 2255510400.

The previous prime is 2291820871. The next prime is 2291820899. The reversal of 2291820889 is 9880281922.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291820889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291820899) 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, 22072 + ... + 71209.

It is an arithmetic number, because the mean of its divisors is an integer number (291039840).

Almost surely, 2^2291820889 is an apocalyptic number.

It is an amenable number.

2291820889 is a deficient number, since it is larger than the sum of its proper divisors (36497831).

2291820889 is an equidigital number, since it uses as much as digits as its factorization.

2291820889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93671.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 2291820889 is about 47872.9661604543. The cubic root of 2291820889 is about 1318.4395566010.

The spelling of 2291820889 in words is "two billion, two hundred ninety-one million, eight hundred twenty thousand, eight hundred eighty-nine".