195898229 has 4 divisors (see below), whose sum is σ = 199594476. Its totient is φ = 192201984.

The previous prime is 195898217. The next prime is 195898243. The reversal of 195898229 is 922898591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 922898591 = 59 ⋅15642349.

It can be written as a sum of positive squares in 2 ways, for example, as 155575729 + 40322500 = 12473^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 195898229 - 2⁸ = 195897973 is a prime.

It is a super-2 number, since 2×195898229² = 76752232250672882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 3696193 = 195898229 / (1 + 9 + 5 + 8 + 9 + 8 + 2 + 2 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195898529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1848044 + ... + 1848149.

It is an arithmetic number, because the mean of its divisors is an integer number (49898619).

Almost surely, 2^195898229 is an apocalyptic number.

It is an amenable number.

195898229 is a deficient number, since it is larger than the sum of its proper divisors (3696247).

195898229 is an equidigital number, since it uses as much as digits as its factorization.

195898229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696246.

The product of its digits is 933120, while the sum is 53.

The square root of 195898229 is about 13996.3648494886. The cubic root of 195898229 is about 580.7780175262.

The spelling of 195898229 in words is "one hundred ninety-five million, eight hundred ninety-eight thousand, two hundred twenty-nine".