197489916 has 36 divisors (see below), whose sum is σ = 537612712. Its totient is φ = 60765984.

The previous prime is 197489909. The next prime is 197489921. The reversal of 197489916 is 619984791.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 210526 + ... + 211461.

Almost surely, 2^197489916 is an apocalyptic number.

It is an amenable number.

197489916 is an abundant number, since it is smaller than the sum of its proper divisors (340122796).

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

197489916 is a wasteful number, since it uses less digits than its factorization.

197489916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422010 (or 422005 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 197489916 is about 14053.1105453561. The cubic root of 197489916 is about 582.3467307211.

The spelling of 197489916 in words is "one hundred ninety-seven million, four hundred eighty-nine thousand, nine hundred sixteen".