2778722085 has 8 divisors (see below), whose sum is σ = 4445955360. Its totient is φ = 1481985104.

The previous prime is 2778722041. The next prime is 2778722099. The reversal of 2778722085 is 5802278772.

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

It is a cyclic number.

It is not a de Polignac number, because 2778722085 - 2¹⁴ = 2778705701 is a prime.

It is a congruent 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, 92624055 + ... + 92624084.

It is an arithmetic number, because the mean of its divisors is an integer number (555744420).

Almost surely, 2^2778722085 is an apocalyptic number.

It is an amenable number.

2778722085 is a deficient number, since it is larger than the sum of its proper divisors (1667233275).

2778722085 is a wasteful number, since it uses less digits than its factorization.

2778722085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185248147.

The product of its (nonzero) digits is 878080, while the sum is 48.

The square root of 2778722085 is about 52713.5853931413. The cubic root of 2778722085 is about 1405.8803827007.

The spelling of 2778722085 in words is "two billion, seven hundred seventy-eight million, seven hundred twenty-two thousand, eighty-five".