2290991911 has 4 divisors (see below), whose sum is σ = 2467222072. Its totient is φ = 2114761752.

The previous prime is 2290991869. The next prime is 2290991917. The reversal of 2290991911 is 1191990922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1191990922 = 2 ⋅595995461.

It is a cyclic number.

It is not a de Polignac number, because 2290991911 - 2⁷ = 2290991783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290991917) 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, 88115061 + ... + 88115086.

It is an arithmetic number, because the mean of its divisors is an integer number (616805518).

Almost surely, 2^2290991911 is an apocalyptic number.

2290991911 is a deficient number, since it is larger than the sum of its proper divisors (176230161).

2290991911 is a wasteful number, since it uses less digits than its factorization.

2290991911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176230160.

The product of its (nonzero) digits is 26244, while the sum is 43.

The square root of 2290991911 is about 47864.3072758815. The cubic root of 2290991911 is about 1318.2805725086.

The spelling of 2290991911 in words is "two billion, two hundred ninety million, nine hundred ninety-one thousand, nine hundred eleven".