196261857 has 12 divisors (see below), whose sum is σ = 309261264. Its totient is φ = 118946520.

The previous prime is 196261853. The next prime is 196261913. The reversal of 196261857 is 758162691.

196261857 is a `hidden beast` number, since 1 + 9 + 626 + 18 + 5 + 7 = 666.

It is not a de Polignac number, because 196261857 - 2² = 196261853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196261853) by changing a digit.

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, 991123 + ... + 991320.

It is an arithmetic number, because the mean of its divisors is an integer number (25771772).

Almost surely, 2^196261857 is an apocalyptic number.

It is an amenable number.

196261857 is a deficient number, since it is larger than the sum of its proper divisors (112999407).

196261857 is a wasteful number, since it uses less digits than its factorization.

196261857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982460 (or 1982457 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 196261857 is about 14009.3489142073. The cubic root of 196261857 is about 581.1371438193.

The spelling of 196261857 in words is "one hundred ninety-six million, two hundred sixty-one thousand, eight hundred fifty-seven".