195319066 has 4 divisors (see below), whose sum is σ = 292978602. Its totient is φ = 97659532.

The previous prime is 195319051. The next prime is 195319067. The reversal of 195319066 is 660913591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148328041 + 46991025 = 12179^2 + 6855^2 .

It is a super-2 number, since 2×195319066² = 76299075086224712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195319067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48829765 + ... + 48829768.

Almost surely, 2^195319066 is an apocalyptic number.

195319066 is a deficient number, since it is larger than the sum of its proper divisors (97659536).

195319066 is an equidigital number, since it uses as much as digits as its factorization.

195319066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97659535.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 195319066 is about 13975.6597697568. The cubic root of 195319066 is about 580.2051058188.

The spelling of 195319066 in words is "one hundred ninety-five million, three hundred nineteen thousand, sixty-six".