3198681697 has 4 divisors (see below), whose sum is σ = 3199578516. Its totient is φ = 3197784880.

The previous prime is 3198681677. The next prime is 3198681713. The reversal of 3198681697 is 7961868913.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2399432256 + 799249441 = 48984^2 + 28271^2 .

It is a cyclic number.

It is not a de Polignac number, because 3198681697 - 2⁷ = 3198681569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3198681677) 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 in 3 ways as a sum of consecutive naturals, for example, 443038 + ... + 450199.

It is an arithmetic number, because the mean of its divisors is an integer number (799894629).

Almost surely, 2^3198681697 is an apocalyptic number.

It is an amenable number.

3198681697 is a deficient number, since it is larger than the sum of its proper divisors (896819).

3198681697 is an equidigital number, since it uses as much as digits as its factorization.

3198681697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896818.

The product of its digits is 3919104, while the sum is 58.

The square root of 3198681697 is about 56556.8890321948. The cubic root of 3198681697 is about 1473.4102104202.

The spelling of 3198681697 in words is "three billion, one hundred ninety-eight million, six hundred eighty-one thousand, six hundred ninety-seven".