197965458236 has 144 divisors (see below), whose sum is σ = 452551680000. Its totient is φ = 73987520256.

The previous prime is 197965458227. The next prime is 197965458253. The reversal of 197965458236 is 632854569791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34431890 + ... + 34437638.

It is an arithmetic number, because the mean of its divisors is an integer number (3142720000).

Almost surely, 2^197965458236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197965458236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226275840000).

197965458236 is an abundant number, since it is smaller than the sum of its proper divisors (254586221764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197965458236 is a wasteful number, since it uses less digits than its factorization.

197965458236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6188 (or 6173 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 65.

The spelling of 197965458236 in words is "one hundred ninety-seven billion, nine hundred sixty-five million, four hundred fifty-eight thousand, two hundred thirty-six".