2806139195 has 4 divisors (see below), whose sum is σ = 3367367040. Its totient is φ = 2244911352.

The previous prime is 2806139191. The next prime is 2806139227. The reversal of 2806139195 is 5919316082.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2806139195 - 2² = 2806139191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2806139191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280613915 + ... + 280613924.

It is an arithmetic number, because the mean of its divisors is an integer number (841841760).

Almost surely, 2^2806139195 is an apocalyptic number.

2806139195 is a deficient number, since it is larger than the sum of its proper divisors (561227845).

2806139195 is an equidigital number, since it uses as much as digits as its factorization.

2806139195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561227844.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 2806139195 is about 52973.0043984670. The cubic root of 2806139195 is about 1410.4891073482.

The spelling of 2806139195 in words is "two billion, eight hundred six million, one hundred thirty-nine thousand, one hundred ninety-five".