195742898 has 18 divisors (see below), whose sum is σ = 318355767. Its totient is φ = 90224160.

The previous prime is 195742891. The next prime is 195742909. The reversal of 195742898 is 898247591.

It can be written as a sum of positive squares in 5 ways, for example, as 21687649 + 174055249 = 4657^2 + 13193^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9893.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195742891) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 256838 + ... + 257598.

Almost surely, 2^195742898 is an apocalyptic number.

195742898 is a deficient number, since it is larger than the sum of its proper divisors (122612869).

195742898 is an frugal number, since it uses more digits than its factorization.

195742898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 776 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 195742898 is about 13990.8147725570. The cubic root of 195742898 is about 580.6244740512.

The spelling of 195742898 in words is "one hundred ninety-five million, seven hundred forty-two thousand, eight hundred ninety-eight".