2298768991 has 4 divisors (see below), whose sum is σ = 2304501984. Its totient is φ = 2293036000.

The previous prime is 2298768977. The next prime is 2298769043. The reversal of 2298768991 is 1998678922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1998678922 = 2 ⋅999339461.

It is a cyclic number.

It is not a de Polignac number, because 2298768991 - 2⁵ = 2298768959 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 (2298766991) 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, 2865895 + ... + 2866696.

It is an arithmetic number, because the mean of its divisors is an integer number (576125496).

Almost surely, 2^2298768991 is an apocalyptic number.

2298768991 is a deficient number, since it is larger than the sum of its proper divisors (5732993).

2298768991 is an equidigital number, since it uses as much as digits as its factorization.

2298768991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732992.

The product of its digits is 7838208, while the sum is 61.

The square root of 2298768991 is about 47945.4793593723. The cubic root of 2298768991 is about 1319.7705813027.

The spelling of 2298768991 in words is "two billion, two hundred ninety-eight million, seven hundred sixty-eight thousand, nine hundred ninety-one".