2891130992 has 20 divisors (see below), whose sum is σ = 5621797176. Its totient is φ = 1440344640.

The previous prime is 2891130971. The next prime is 2891131037. The reversal of 2891130992 is 2990311982.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 321734 + ... + 330597.

Almost surely, 2^2891130992 is an apocalyptic number.

It is an amenable number.

2891130992 is a deficient number, since it is larger than the sum of its proper divisors (2730666184).

2891130992 is a wasteful number, since it uses less digits than its factorization.

2891130992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652616 (or 652610 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 2891130992 is about 53769.2383431270. The cubic root of 2891130992 is about 1424.5879168764.

The spelling of 2891130992 in words is "two billion, eight hundred ninety-one million, one hundred thirty thousand, nine hundred ninety-two".