196215318 has 128 divisors (see below), whose sum is σ = 506419200. Its totient is φ = 55800576.

The previous prime is 196215311. The next prime is 196215353. The reversal of 196215318 is 813512691.

196215318 is a `hidden beast` number, since 19 + 621 + 5 + 3 + 18 = 666.

It is a super-2 number, since 2×196215318² = 77000902035682248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196215311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 626730 + ... + 627042.

It is an arithmetic number, because the mean of its divisors is an integer number (3956400).

Almost surely, 2^196215318 is an apocalyptic number.

196215318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 196215318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253209600).

196215318 is an abundant number, since it is smaller than the sum of its proper divisors (310203882).

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

196215318 is a wasteful number, since it uses less digits than its factorization.

196215318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 397 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 196215318 is about 14007.6878177664. The cubic root of 196215318 is about 581.0912057377.

The spelling of 196215318 in words is "one hundred ninety-six million, two hundred fifteen thousand, three hundred eighteen".