197881846 has 16 divisors (see below), whose sum is σ = 320891760. Its totient is φ = 91199520.

The previous prime is 197881823. The next prime is 197881907. The reversal of 197881846 is 648188791.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 197881793 and 197881802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68965 + ... + 71776.

It is an arithmetic number, because the mean of its divisors is an integer number (20055735).

Almost surely, 2^197881846 is an apocalyptic number.

197881846 is a deficient number, since it is larger than the sum of its proper divisors (123009914).

197881846 is a wasteful number, since it uses less digits than its factorization.

197881846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140799.

The product of its digits is 774144, while the sum is 52.

The square root of 197881846 is about 14067.0482333715. The cubic root of 197881846 is about 582.7317095942.

The spelling of 197881846 in words is "one hundred ninety-seven million, eight hundred eighty-one thousand, eight hundred forty-six".