2587947291 has 12 divisors (see below), whose sum is σ = 3751943520. Its totient is φ = 1718930160.

The previous prime is 2587947289. The next prime is 2587947311. The reversal of 2587947291 is 1927497852.

2587947291 is a `hidden beast` number, since 2 + 5 + 87 + 9 + 472 + 91 = 666.

It is not a de Polignac number, because 2587947291 - 2¹ = 2587947289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2587948291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 528096 + ... + 532973.

It is an arithmetic number, because the mean of its divisors is an integer number (312661960).

Almost surely, 2^2587947291 is an apocalyptic number.

2587947291 is a deficient number, since it is larger than the sum of its proper divisors (1163996229).

2587947291 is a wasteful number, since it uses less digits than its factorization.

2587947291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061346 (or 1061343 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 2587947291 is about 50871.8713141162. The cubic root of 2587947291 is about 1372.9407926568.

It can be divided in two parts, 258794 and 7291, that added together give a triangular number (266085 = T₇₂₉).

The spelling of 2587947291 in words is "two billion, five hundred eighty-seven million, nine hundred forty-seven thousand, two hundred ninety-one".