197918438073 has 8 divisors (see below), whose sum is σ = 264299122368. Its totient is φ = 131741689584.

The previous prime is 197918438051. The next prime is 197918438117. The reversal of 197918438073 is 370834819791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197918438073 - 2⁵ = 197918438041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197918437998 and 197918438016.

It is not an unprimeable number, because it can be changed into a prime (197918438873) 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, 50981686 + ... + 50985567.

It is an arithmetic number, because the mean of its divisors is an integer number (33037390296).

Almost surely, 2^197918438073 is an apocalyptic number.

It is an amenable number.

197918438073 is a deficient number, since it is larger than the sum of its proper divisors (66380684295).

197918438073 is a wasteful number, since it uses less digits than its factorization.

197918438073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101967903.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 197918438073 in words is "one hundred ninety-seven billion, nine hundred eighteen million, four hundred thirty-eight thousand, seventy-three".