2290270091 has 4 divisors (see below), whose sum is σ = 2296313400. Its totient is φ = 2284226784.

The previous prime is 2290270063. The next prime is 2290270109. The reversal of 2290270091 is 1900720922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1900720922 = 2 ⋅950360461.

It is a cyclic number.

It is not a de Polignac number, because 2290270091 - 2¹⁸ = 2290007947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2290270061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3021086 + ... + 3021843.

It is an arithmetic number, because the mean of its divisors is an integer number (574078350).

Almost surely, 2^2290270091 is an apocalyptic number.

2290270091 is a deficient number, since it is larger than the sum of its proper divisors (6043309).

2290270091 is an equidigital number, since it uses as much as digits as its factorization.

2290270091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043308.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2290270091 is about 47856.7664076878. The cubic root of 2290270091 is about 1318.1421082868.

Subtracting from 2290270091 its reverse (1900720922), we obtain a square (389549169 = 19737²).

The spelling of 2290270091 in words is "two billion, two hundred ninety million, two hundred seventy thousand, ninety-one".