196981972 has 12 divisors (see below), whose sum is σ = 376056576. Its totient is φ = 89537240.

The previous prime is 196981927. The next prime is 196982047. The reversal of 196981972 is 279189691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238388 + ... + 2238475.

It is an arithmetic number, because the mean of its divisors is an integer number (31338048).

Almost surely, 2^196981972 is an apocalyptic number.

It is an amenable number.

196981972 is a deficient number, since it is larger than the sum of its proper divisors (179074604).

196981972 is a wasteful number, since it uses less digits than its factorization.

196981972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476878 (or 4476876 counting only the distinct ones).

The product of its digits is 489888, while the sum is 52.

The square root of 196981972 is about 14035.0266120161. The cubic root of 196981972 is about 581.8470368709.

The spelling of 196981972 in words is "one hundred ninety-six million, nine hundred eighty-one thousand, nine hundred seventy-two".