195948259 has 4 divisors (see below), whose sum is σ = 211021216. Its totient is φ = 180875304.

The previous prime is 195948253. The next prime is 195948289. The reversal of 195948259 is 952849591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 952849591 = 131 ⋅7273661.

It is a cyclic number.

It is not a de Polignac number, because 195948259 - 2⁵ = 195948227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195948253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7536459 + ... + 7536484.

It is an arithmetic number, because the mean of its divisors is an integer number (52755304).

Almost surely, 2^195948259 is an apocalyptic number.

195948259 is a deficient number, since it is larger than the sum of its proper divisors (15072957).

195948259 is a wasteful number, since it uses less digits than its factorization.

195948259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072956.

The product of its digits is 1166400, while the sum is 52.

The square root of 195948259 is about 13998.1519851729. The cubic root of 195948259 is about 580.8274545071.

The spelling of 195948259 in words is "one hundred ninety-five million, nine hundred forty-eight thousand, two hundred fifty-nine".