196173681 has 16 divisors (see below), whose sum is σ = 286023360. Its totient is φ = 118609920.

The previous prime is 196173671. The next prime is 196173683. The reversal of 196173681 is 186371691.

It is not a de Polignac number, because 196173681 - 2⁷ = 196173553 is a prime.

It is a super-2 number, since 2×196173681² = 76968226234179522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (196173683) 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 15 ways as a sum of consecutive naturals, for example, 7425 + ... + 21153.

It is an arithmetic number, because the mean of its divisors is an integer number (17876460).

Almost surely, 2^196173681 is an apocalyptic number.

196173681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

196173681 is a deficient number, since it is larger than the sum of its proper divisors (89849679).

196173681 is a wasteful number, since it uses less digits than its factorization.

196173681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176.

The product of its digits is 54432, while the sum is 42.

The square root of 196173681 is about 14006.2015193271. The cubic root of 196173681 is about 581.0501002040.

The spelling of 196173681 in words is "one hundred ninety-six million, one hundred seventy-three thousand, six hundred eighty-one".