197674244818 has 16 divisors (see below), whose sum is σ = 330477066720. Its totient is φ = 88127217216.

The previous prime is 197674244813. The next prime is 197674244819. The reversal of 197674244818 is 818442476791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (197674244813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152997996 + ... + 152999287.

It is an arithmetic number, because the mean of its divisors is an integer number (20654816670).

Almost surely, 2^197674244818 is an apocalyptic number.

197674244818 is a deficient number, since it is larger than the sum of its proper divisors (132802821902).

197674244818 is a wasteful number, since it uses less digits than its factorization.

197674244818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305997321.

The product of its digits is 21676032, while the sum is 61.

The spelling of 197674244818 in words is "one hundred ninety-seven billion, six hundred seventy-four million, two hundred forty-four thousand, eight hundred eighteen".