2779692985 has 8 divisors (see below), whose sum is σ = 3385417536. Its totient is φ = 2190563760.

The previous prime is 2779692977. The next prime is 2779693009. The reversal of 2779692985 is 5892969772.

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

It is not a de Polignac number, because 2779692985 - 2³ = 2779692977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4148461 + ... + 4149130.

It is an arithmetic number, because the mean of its divisors is an integer number (423177192).

Almost surely, 2^2779692985 is an apocalyptic number.

It is an amenable number.

2779692985 is a deficient number, since it is larger than the sum of its proper divisors (605724551).

2779692985 is an equidigital number, since it uses as much as digits as its factorization.

2779692985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297663.

The product of its digits is 34292160, while the sum is 64.

The square root of 2779692985 is about 52722.7937897832. The cubic root of 2779692985 is about 1406.0441042816.

The spelling of 2779692985 in words is "two billion, seven hundred seventy-nine million, six hundred ninety-two thousand, nine hundred eighty-five".