2291964681 has 16 divisors (see below), whose sum is σ = 3117945600. Its totient is φ = 1497150288.

The previous prime is 2291964671. The next prime is 2291964709. The reversal of 2291964681 is 1864691922.

It is not a de Polignac number, because 2291964681 - 2⁶ = 2291964617 is a prime.

It is a super-2 number, since 2×2291964681² = 10506204197902863522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2291964681.

It is not an unprimeable number, because it can be changed into a prime (2291964611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33250 + ... + 75428.

It is an arithmetic number, because the mean of its divisors is an integer number (194871600).

Almost surely, 2^2291964681 is an apocalyptic number.

It is an amenable number.

2291964681 is a deficient number, since it is larger than the sum of its proper divisors (825980919).

2291964681 is a wasteful number, since it uses less digits than its factorization.

2291964681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42548.

The product of its digits is 373248, while the sum is 48.

The square root of 2291964681 is about 47874.4679448242. The cubic root of 2291964681 is about 1318.4671295957.

The spelling of 2291964681 in words is "two billion, two hundred ninety-one million, nine hundred sixty-four thousand, six hundred eighty-one".