2861358879 has 4 divisors (see below), whose sum is σ = 3815145176. Its totient is φ = 1907572584.

The previous prime is 2861358833. The next prime is 2861358923. The reversal of 2861358879 is 9788531682.

It is a happy number.

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

It is not a de Polignac number, because 2861358879 - 2¹⁶ = 2861293343 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 (2861358679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476893144 + ... + 476893149.

It is an arithmetic number, because the mean of its divisors is an integer number (953786294).

Almost surely, 2^2861358879 is an apocalyptic number.

2861358879 is a deficient number, since it is larger than the sum of its proper divisors (953786297).

2861358879 is an equidigital number, since it uses as much as digits as its factorization.

2861358879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953786296.

The product of its digits is 5806080, while the sum is 57.

The square root of 2861358879 is about 53491.6711180348. The cubic root of 2861358879 is about 1419.6810232086.

The spelling of 2861358879 in words is "two billion, eight hundred sixty-one million, three hundred fifty-eight thousand, eight hundred seventy-nine".