2115439587 has 12 divisors (see below), whose sum is σ = 3065278320. Its totient is φ = 1405842288.

The previous prime is 2115439583. The next prime is 2115439607. The reversal of 2115439587 is 7859345112.

2115439587 is a `hidden beast` number, since 2 + 11 + 54 + 3 + 9 + 587 = 666.

It is not a de Polignac number, because 2115439587 - 2² = 2115439583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115439583) 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, 367887 + ... + 373592.

It is an arithmetic number, because the mean of its divisors is an integer number (255439860).

Almost surely, 2^2115439587 is an apocalyptic number.

2115439587 is a deficient number, since it is larger than the sum of its proper divisors (949838733).

2115439587 is a wasteful number, since it uses less digits than its factorization.

2115439587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741802 (or 741799 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 2115439587 is about 45993.9081509715. The cubic root of 2115439587 is about 1283.7098563416.

The spelling of 2115439587 in words is "two billion, one hundred fifteen million, four hundred thirty-nine thousand, five hundred eighty-seven".