2589631987 has 2 divisors, whose sum is σ = 2589631988. Its totient is φ = 2589631986.

The previous prime is 2589631921. The next prime is 2589631997. The reversal of 2589631987 is 7891369852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2589631987 - 2¹⁹ = 2589107699 is a prime.

It is not a weakly prime, because it can be changed into another prime (2589631997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1294815993 + 1294815994.

It is an arithmetic number, because the mean of its divisors is an integer number (1294815994).

Almost surely, 2^2589631987 is an apocalyptic number.

2589631987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2589631987 is an equidigital number, since it uses as much as digits as its factorization.

2589631987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 58.

The square root of 2589631987 is about 50888.4268473687. The cubic root of 2589631987 is about 1373.2386459851.

The spelling of 2589631987 in words is "two billion, five hundred eighty-nine million, six hundred thirty-one thousand, nine hundred eighty-seven".