2806140349 has 4 divisors (see below), whose sum is σ = 2806285180. Its totient is φ = 2805995520.

The previous prime is 2806140329. The next prime is 2806140383. The reversal of 2806140349 is 9430416082.

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 209728324 + 2596412025 = 14482^2 + 50955^2 .

It is a cyclic number.

It is not a de Polignac number, because 2806140349 - 2⁵ = 2806140317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2806140319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37854 + ... + 83935.

It is an arithmetic number, because the mean of its divisors is an integer number (701571295).

Almost surely, 2^2806140349 is an apocalyptic number.

It is an amenable number.

2806140349 is a deficient number, since it is larger than the sum of its proper divisors (144831).

2806140349 is a wasteful number, since it uses less digits than its factorization.

2806140349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144830.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 2806140349 is about 52973.0152908063. The cubic root of 2806140349 is about 1410.4893006986.

The spelling of 2806140349 in words is "two billion, eight hundred six million, one hundred forty thousand, three hundred forty-nine".