197793869518 has 48 divisors (see below), whose sum is σ = 346118826384. Its totient is φ = 84526364160.

The previous prime is 197793869503. The next prime is 197793869549. The reversal of 197793869518 is 815968397791.

197793869518 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62061121 + ... + 62064307.

It is an arithmetic number, because the mean of its divisors is an integer number (7210808883).

Almost surely, 2^197793869518 is an apocalyptic number.

197793869518 is a deficient number, since it is larger than the sum of its proper divisors (148324956866).

197793869518 is a wasteful number, since it uses less digits than its factorization.

197793869518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4810 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 73.

The spelling of 197793869518 in words is "one hundred ninety-seven billion, seven hundred ninety-three million, eight hundred sixty-nine thousand, five hundred eighteen".