2290091790 has 64 divisors (see below), whose sum is σ = 6295956480. Its totient is φ = 522236160.

The previous prime is 2290091767. The next prime is 2290091819. The reversal of 2290091790 is 971900922.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79770 + ... + 104610.

It is an arithmetic number, because the mean of its divisors is an integer number (98374320).

Almost surely, 2^2290091790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2290091790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3147978240).

2290091790 is an abundant number, since it is smaller than the sum of its proper divisors (4005864690).

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

2290091790 is a wasteful number, since it uses less digits than its factorization.

2290091790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25297.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 2290091790 is about 47854.9035105077. The cubic root of 2290091790 is about 1318.1079009451.

The spelling of 2290091790 in words is "two billion, two hundred ninety million, ninety-one thousand, seven hundred ninety".