2195208139 has 2 divisors, whose sum is σ = 2195208140. Its totient is φ = 2195208138.

The previous prime is 2195208131. The next prime is 2195208151. The reversal of 2195208139 is 9318025912.

2195208139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2195208139 - 2³ = 2195208131 is a prime.

It is not a weakly prime, because it can be changed into another prime (2195208131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097604069 + 1097604070.

It is an arithmetic number, because the mean of its divisors is an integer number (1097604070).

Almost surely, 2^2195208139 is an apocalyptic number.

2195208139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195208139 is an equidigital number, since it uses as much as digits as its factorization.

2195208139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 2195208139 is about 46853.0483426639. The cubic root of 2195208139 is about 1299.6464796125.

The spelling of 2195208139 in words is "two billion, one hundred ninety-five million, two hundred eight thousand, one hundred thirty-nine".