2868387815 has 16 divisors (see below), whose sum is σ = 3743044992. Its totient is φ = 2101353984.

The previous prime is 2868387793. The next prime is 2868387817. The reversal of 2868387815 is 5187838682.

It is a cyclic number.

It is not a de Polignac number, because 2868387815 - 2²⁰ = 2867339239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868387817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452879 + ... + 459168.

It is an arithmetic number, because the mean of its divisors is an integer number (233940312).

Almost surely, 2^2868387815 is an apocalyptic number.

2868387815 is a deficient number, since it is larger than the sum of its proper divisors (874657177).

2868387815 is a wasteful number, since it uses less digits than its factorization.

2868387815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912106.

The product of its digits is 5160960, while the sum is 56.

The square root of 2868387815 is about 53557.3320377332. The cubic root of 2868387815 is about 1420.8425560776.

The spelling of 2868387815 in words is "two billion, eight hundred sixty-eight million, three hundred eighty-seven thousand, eight hundred fifteen".