195478211 has 2 divisors, whose sum is σ = 195478212. Its totient is φ = 195478210.

The previous prime is 195478187. The next prime is 195478229. The reversal of 195478211 is 112874591.

195478211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195478211 - 2¹⁸ = 195216067 is a prime.

It is not a weakly prime, because it can be changed into another prime (195478271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97739105 + 97739106.

It is an arithmetic number, because the mean of its divisors is an integer number (97739106).

Almost surely, 2^195478211 is an apocalyptic number.

195478211 is a deficient number, since it is larger than the sum of its proper divisors (1).

195478211 is an equidigital number, since it uses as much as digits as its factorization.

195478211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 38.

The square root of 195478211 is about 13981.3522593489. The cubic root of 195478211 is about 580.3626457803.

The spelling of 195478211 in words is "one hundred ninety-five million, four hundred seventy-eight thousand, two hundred eleven".