196371918 has 32 divisors (see below), whose sum is σ = 450462720. Its totient is φ = 63345240.

The previous prime is 196371881. The next prime is 196371937. The reversal of 196371918 is 819173691.

196371918 is a `hidden beast` number, since 1 + 9 + 637 + 1 + 9 + 1 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56980 + ... + 60327.

It is an arithmetic number, because the mean of its divisors is an integer number (14076960).

Almost surely, 2^196371918 is an apocalyptic number.

196371918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

196371918 is an abundant number, since it is smaller than the sum of its proper divisors (254090802).

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

196371918 is a wasteful number, since it uses less digits than its factorization.

196371918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117349 (or 117343 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 196371918 is about 14013.2764905285. The cubic root of 196371918 is about 581.2457548077.

The spelling of 196371918 in words is "one hundred ninety-six million, three hundred seventy-one thousand, nine hundred eighteen".