197163856 has 20 divisors (see below), whose sum is σ = 383219892. Its totient is φ = 98268416.

The previous prime is 197163847. The next prime is 197163859. The reversal of 197163856 is 658361791.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114062400 + 83101456 = 10680^2 + 9116^2 .

It is a super-2 number, since 2×197163856² = 77747172225577472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197163859) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14365 + ... + 24508.

Almost surely, 2^197163856 is an apocalyptic number.

197163856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

197163856 is the 7506-th centered heptagonal number.

It is an amenable number.

197163856 is a deficient number, since it is larger than the sum of its proper divisors (186056036).

197163856 is a wasteful number, since it uses less digits than its factorization.

197163856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39198 (or 39192 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 197163856 is about 14041.5047626670. The cubic root of 197163856 is about 582.0260652859.

The spelling of 197163856 in words is "one hundred ninety-seven million, one hundred sixty-three thousand, eight hundred fifty-six".