2782027261 has 16 divisors (see below), whose sum is σ = 3129590016. Its totient is φ = 2453780736.

The previous prime is 2782027207. The next prime is 2782027267. The reversal of 2782027261 is 1627202872.

It is a cyclic number.

It is not a de Polignac number, because 2782027261 - 2⁷ = 2782027133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2782027261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782027267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313461 + ... + 322213.

It is an arithmetic number, because the mean of its divisors is an integer number (195599376).

Almost surely, 2^2782027261 is an apocalyptic number.

It is an amenable number.

2782027261 is a deficient number, since it is larger than the sum of its proper divisors (347562755).

2782027261 is a wasteful number, since it uses less digits than its factorization.

2782027261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9852.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 2782027261 is about 52744.9264005553. The cubic root of 2782027261 is about 1406.4375741995.

The spelling of 2782027261 in words is "two billion, seven hundred eighty-two million, twenty-seven thousand, two hundred sixty-one".