2887993991 has 8 divisors (see below), whose sum is σ = 2896516224. Its totient is φ = 2879485560.

The previous prime is 2887993987. The next prime is 2887994033. The reversal of 2887993991 is 1993997882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2887993991 - 2² = 2887993987 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 (2887993921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529046 + ... + 534476.

It is an arithmetic number, because the mean of its divisors is an integer number (362064528).

Almost surely, 2^2887993991 is an apocalyptic number.

2887993991 is a deficient number, since it is larger than the sum of its proper divisors (8522233).

2887993991 is an equidigital number, since it uses as much as digits as its factorization.

2887993991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6901.

The product of its digits is 17635968, while the sum is 65.

The square root of 2887993991 is about 53740.0594621926. The cubic root of 2887993991 is about 1424.0724840999.

The spelling of 2887993991 in words is "two billion, eight hundred eighty-seven million, nine hundred ninety-three thousand, nine hundred ninety-one".