2881299391 has 4 divisors (see below), whose sum is σ = 2884156000. Its totient is φ = 2878442784.

The previous prime is 2881299389. The next prime is 2881299427. The reversal of 2881299391 is 1939921882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2881299391 - 2¹ = 2881299389 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 (2881293391) 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, 1426791 + ... + 1428808.

It is an arithmetic number, because the mean of its divisors is an integer number (721039000).

Almost surely, 2^2881299391 is an apocalyptic number.

2881299391 is a deficient number, since it is larger than the sum of its proper divisors (2856609).

2881299391 is a wasteful number, since it uses less digits than its factorization.

2881299391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856608.

The product of its digits is 559872, while the sum is 52.

The square root of 2881299391 is about 53677.7364556293. The cubic root of 2881299391 is about 1422.9712616219.

The spelling of 2881299391 in words is "two billion, eight hundred eighty-one million, two hundred ninety-nine thousand, three hundred ninety-one".