197181963 has 36 divisors (see below), whose sum is σ = 331511544. Its totient is φ = 112464000.

The previous prime is 197181947. The next prime is 197181973. The reversal of 197181963 is 369181791.

It is not a de Polignac number, because 197181963 - 2⁴ = 197181947 is a prime.

It is a super-3 number, since 3×197181963³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (197181913) 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 35 ways as a sum of consecutive naturals, for example, 13188 + ... + 23838.

It is an arithmetic number, because the mean of its divisors is an integer number (9208654).

Almost surely, 2^197181963 is an apocalyptic number.

197181963 is a deficient number, since it is larger than the sum of its proper divisors (134329581).

197181963 is a wasteful number, since it uses less digits than its factorization.

197181963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10696 (or 10682 counting only the distinct ones).

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

The square root of 197181963 is about 14042.1495149425. The cubic root of 197181963 is about 582.0438819784.

The spelling of 197181963 in words is "one hundred ninety-seven million, one hundred eighty-one thousand, nine hundred sixty-three".