2861263867 has 16 divisors (see below), whose sum is σ = 3569875200. Its totient is φ = 2227940640.

The previous prime is 2861263841. The next prime is 2861263891. The reversal of 2861263867 is 7683621682.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2861263867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2861263867.

It is not an unprimeable number, because it can be changed into a prime (2861263807) 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, 99609 + ... + 125077.

It is an arithmetic number, because the mean of its divisors is an integer number (223117200).

Almost surely, 2^2861263867 is an apocalyptic number.

2861263867 is a deficient number, since it is larger than the sum of its proper divisors (708611333).

2861263867 is a wasteful number, since it uses less digits than its factorization.

2861263867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946.

The product of its digits is 1161216, while the sum is 49.

The square root of 2861263867 is about 53490.7830097859. The cubic root of 2861263867 is about 1419.6653094363.

The spelling of 2861263867 in words is "two billion, eight hundred sixty-one million, two hundred sixty-three thousand, eight hundred sixty-seven".