197353816 has 64 divisors (see below), whose sum is σ = 442260000. Its totient is φ = 81500160.

The previous prime is 197353769. The next prime is 197353837. The reversal of 197353816 is 618353791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41110 + ... + 45658.

Almost surely, 2^197353816 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 197353816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221130000).

197353816 is an abundant number, since it is smaller than the sum of its proper divisors (244906184).

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

197353816 is a wasteful number, since it uses less digits than its factorization.

197353816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612 (or 4608 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 197353816 is about 14048.2673664762. The cubic root of 197353816 is about 582.2129254019.

The spelling of 197353816 in words is "one hundred ninety-seven million, three hundred fifty-three thousand, eight hundred sixteen".