2861588987 has 4 divisors (see below), whose sum is σ = 2861975016. Its totient is φ = 2861202960.

The previous prime is 2861588981. The next prime is 2861589001. The reversal of 2861588987 is 7898851682.

2861588987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2861588987 - 2¹⁴ = 2861572603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2861588981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181673 + ... + 196794.

It is an arithmetic number, because the mean of its divisors is an integer number (715493754).

Almost surely, 2^2861588987 is an apocalyptic number.

2861588987 is a deficient number, since it is larger than the sum of its proper divisors (386029).

2861588987 is an equidigital number, since it uses as much as digits as its factorization.

2861588987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386028.

The product of its digits is 15482880, while the sum is 62.

The square root of 2861588987 is about 53493.8219516983. The cubic root of 2861588987 is about 1419.7190786942.

The spelling of 2861588987 in words is "two billion, eight hundred sixty-one million, five hundred eighty-eight thousand, nine hundred eighty-seven".