2887287391 has 2 divisors, whose sum is σ = 2887287392. Its totient is φ = 2887287390.

The previous prime is 2887287383. The next prime is 2887287401. The reversal of 2887287391 is 1937827882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2887287391 - 2³ = 2887287383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2887287301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1443643695 + 1443643696.

It is an arithmetic number, because the mean of its divisors is an integer number (1443643696).

Almost surely, 2^2887287391 is an apocalyptic number.

2887287391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2887287391 is an equidigital number, since it uses as much as digits as its factorization.

2887287391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 55.

The square root of 2887287391 is about 53733.4848209196. The cubic root of 2887287391 is about 1423.9563329240.

The spelling of 2887287391 in words is "two billion, eight hundred eighty-seven million, two hundred eighty-seven thousand, three hundred ninety-one".