2774980385 has 4 divisors (see below), whose sum is σ = 3329976468. Its totient is φ = 2219984304.

The previous prime is 2774980367. The next prime is 2774980423. The reversal of 2774980385 is 5830894772.

2774980385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 322849024 + 2452131361 = 17968^2 + 49519^2 .

It is a cyclic number.

It is not a de Polignac number, because 2774980385 - 2⁸ = 2774980129 is a prime.

It is a super-2 number, since 2×2774980385² = 15401032274269496450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277498034 + ... + 277498043.

It is an arithmetic number, because the mean of its divisors is an integer number (832494117).

Almost surely, 2^2774980385 is an apocalyptic number.

It is an amenable number.

2774980385 is a deficient number, since it is larger than the sum of its proper divisors (554996083).

2774980385 is an equidigital number, since it uses as much as digits as its factorization.

2774980385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554996082.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The square root of 2774980385 is about 52678.0825865938. The cubic root of 2774980385 is about 1405.2490678534.

The spelling of 2774980385 in words is "two billion, seven hundred seventy-four million, nine hundred eighty thousand, three hundred eighty-five".