2881491128 has 16 divisors (see below), whose sum is σ = 5441667000. Its totient is φ = 1430379936.

The previous prime is 2881491091. The next prime is 2881491133. The reversal of 2881491128 is 8211941882.

It is a super-2 number, since 2×2881491128² = 16605982241485424768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294523 + ... + 1296746.

Almost surely, 2^2881491128 is an apocalyptic number.

It is an amenable number.

2881491128 is a deficient number, since it is larger than the sum of its proper divisors (2560175872).

2881491128 is a wasteful number, since it uses less digits than its factorization.

2881491128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591414 (or 2591410 counting only the distinct ones).

The product of its digits is 73728, while the sum is 44.

The square root of 2881491128 is about 53679.5224270857. The cubic root of 2881491128 is about 1423.0028249494.

The spelling of 2881491128 in words is "two billion, eight hundred eighty-one million, four hundred ninety-one thousand, one hundred twenty-eight".