4195065691 has 2 divisors, whose sum is σ = 4195065692. Its totient is φ = 4195065690.

The previous prime is 4195065653. The next prime is 4195065701. The reversal of 4195065691 is 1965605914.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4195065691 - 2¹³ = 4195057499 is a prime.

It is not a weakly prime, because it can be changed into another prime (4195065191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2097532845 + 2097532846.

It is an arithmetic number, because the mean of its divisors is an integer number (2097532846).

Almost surely, 2^4195065691 is an apocalyptic number.

4195065691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4195065691 is an equidigital number, since it uses as much as digits as its factorization.

4195065691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 4195065691 is about 64769.3267758744. The cubic root of 4195065691 is about 1612.7965606906.

The spelling of 4195065691 in words is "four billion, one hundred ninety-five million, sixty-five thousand, six hundred ninety-one".