196312865 has 12 divisors (see below), whose sum is σ = 274037076. Its totient is φ = 134614368.

The previous prime is 196312847. The next prime is 196312877. The reversal of 196312865 is 568213691.

It can be written as a sum of positive squares in 2 ways, for example, as 140944384 + 55368481 = 11872^2 + 7441^2 .

It is not a de Polignac number, because 196312865 - 2¹² = 196308769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 400394 + ... + 400883.

It is an arithmetic number, because the mean of its divisors is an integer number (22836423).

Almost surely, 2^196312865 is an apocalyptic number.

It is an amenable number.

196312865 is a deficient number, since it is larger than the sum of its proper divisors (77724211).

196312865 is an equidigital number, since it uses as much as digits as its factorization.

196312865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801296 (or 801289 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 196312865 is about 14011.1692945307. The cubic root of 196312865 is about 581.1874848555.

The spelling of 196312865 in words is "one hundred ninety-six million, three hundred twelve thousand, eight hundred sixty-five".