195289619 has 16 divisors (see below), whose sum is σ = 245153280. Its totient is φ = 151683840.

The previous prime is 195289613. The next prime is 195289643. The reversal of 195289619 is 916982591.

195289619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195289619 - 2⁴ = 195289603 is a prime.

It is a super-2 number, since 2×195289619² = 76276070578330322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (195289613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28862 + ... + 34979.

It is an arithmetic number, because the mean of its divisors is an integer number (15322080).

Almost surely, 2^195289619 is an apocalyptic number.

195289619 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

195289619 is a deficient number, since it is larger than the sum of its proper divisors (49863661).

195289619 is a wasteful number, since it uses less digits than its factorization.

195289619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63890.

The product of its digits is 349920, while the sum is 50.

The square root of 195289619 is about 13974.6062198546. The cubic root of 195289619 is about 580.1759464220.

The spelling of 195289619 in words is "one hundred ninety-five million, two hundred eighty-nine thousand, six hundred nineteen".