2291452991 has 16 divisors (see below), whose sum is σ = 2449175040. Its totient is φ = 2137544640.

The previous prime is 2291452973. The next prime is 2291453011. The reversal of 2291452991 is 1992541922.

It is a cyclic number.

It is not a de Polignac number, because 2291452991 - 2³⁰ = 1217711167 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 (2291452091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1223786 + ... + 1225656.

It is an arithmetic number, because the mean of its divisors is an integer number (153073440).

Almost surely, 2^2291452991 is an apocalyptic number.

2291452991 is a deficient number, since it is larger than the sum of its proper divisors (157722049).

2291452991 is a wasteful number, since it uses less digits than its factorization.

2291452991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846.

The product of its digits is 116640, while the sum is 44.

The square root of 2291452991 is about 47869.1235662405. The cubic root of 2291452991 is about 1318.3690046605.

The spelling of 2291452991 in words is "two billion, two hundred ninety-one million, four hundred fifty-two thousand, nine hundred ninety-one".