195830399 has 2 divisors, whose sum is σ = 195830400. Its totient is φ = 195830398.

The previous prime is 195830377. The next prime is 195830407. The reversal of 195830399 is 993038591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195830399 - 2⁸ = 195830143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195830329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97915199 + 97915200.

It is an arithmetic number, because the mean of its divisors is an integer number (97915200).

Almost surely, 2^195830399 is an apocalyptic number.

195830399 is a deficient number, since it is larger than the sum of its proper divisors (1).

195830399 is an equidigital number, since it uses as much as digits as its factorization.

195830399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 195830399 is about 13993.9415105252. The cubic root of 195830399 is about 580.7109780899.

The spelling of 195830399 in words is "one hundred ninety-five million, eight hundred thirty thousand, three hundred ninety-nine".