2794866781 has 16 divisors (see below), whose sum is σ = 3335122944. Its totient is φ = 2289990384.

The previous prime is 2794866713. The next prime is 2794866821. The reversal of 2794866781 is 1876684972.

It is a cyclic number.

It is not a de Polignac number, because 2794866781 - 2¹⁷ = 2794735709 is a prime.

It is a super-2 number, since 2×2794866781² = 15622560647074603922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2794864781) 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, 302476 + ... + 311578.

It is an arithmetic number, because the mean of its divisors is an integer number (208445184).

Almost surely, 2^2794866781 is an apocalyptic number.

It is an amenable number.

2794866781 is a deficient number, since it is larger than the sum of its proper divisors (540256163).

2794866781 is a wasteful number, since it uses less digits than its factorization.

2794866781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11040.

The product of its digits is 8128512, while the sum is 58.

The square root of 2794866781 is about 52866.4996098664. The cubic root of 2794866781 is about 1408.5979022000.

The spelling of 2794866781 in words is "two billion, seven hundred ninety-four million, eight hundred sixty-six thousand, seven hundred eighty-one".