2794855509 has 28 divisors (see below), whose sum is σ = 4197605292. Its totient is φ = 1860019200.

The previous prime is 2794855463. The next prime is 2794855523. The reversal of 2794855509 is 9055584972.

2794855509 is a `hidden beast` number, since 2 + 7 + 9 + 4 + 85 + 550 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1185080625 + 1609774884 = 34425^2 + 40122^2 .

It is not a de Polignac number, because 2794855509 - 2⁸ = 2794855253 is a prime.

It is a super-2 number, since 2×2794855509² = 15622434632375298162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2794855529) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 464299 + ... + 470279.

Almost surely, 2^2794855509 is an apocalyptic number.

It is an amenable number.

2794855509 is a deficient number, since it is larger than the sum of its proper divisors (1402749783).

2794855509 is an frugal number, since it uses more digits than its factorization.

2794855509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640 (or 6625 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The square root of 2794855509 is about 52866.3930016036. The cubic root of 2794855509 is about 1408.5960085215.

The spelling of 2794855509 in words is "two billion, seven hundred ninety-four million, eight hundred fifty-five thousand, five hundred nine".