2791868865 has 8 divisors (see below), whose sum is σ = 4466990208. Its totient is φ = 1488996720.

The previous prime is 2791868861. The next prime is 2791868899. The reversal of 2791868865 is 5688681972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2791868865 - 2² = 2791868861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2791868799 and 2791868808.

It is not an unprimeable number, because it can be changed into a prime (2791868861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93062281 + ... + 93062310.

It is an arithmetic number, because the mean of its divisors is an integer number (558373776).

Almost surely, 2^2791868865 is an apocalyptic number.

It is an amenable number.

2791868865 is a deficient number, since it is larger than the sum of its proper divisors (1675121343).

2791868865 is a wasteful number, since it uses less digits than its factorization.

2791868865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186124599.

The product of its digits is 11612160, while the sum is 60.

The square root of 2791868865 is about 52838.1383566832. The cubic root of 2791868865 is about 1408.0940774737.

The spelling of 2791868865 in words is "two billion, seven hundred ninety-one million, eight hundred sixty-eight thousand, eight hundred sixty-five".