196819858 has 8 divisors (see below), whose sum is σ = 302095728. Its totient is φ = 96121284.

The previous prime is 196819853. The next prime is 196819859. The reversal of 196819858 is 858918691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 196819799 and 196819808.

It is not an unprimeable number, because it can be changed into a prime (196819853) 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 3 ways as a sum of consecutive naturals, for example, 1144216 + ... + 1144387.

It is an arithmetic number, because the mean of its divisors is an integer number (37761966).

Almost surely, 2^196819858 is an apocalyptic number.

196819858 is a deficient number, since it is larger than the sum of its proper divisors (105275870).

196819858 is a wasteful number, since it uses less digits than its factorization.

196819858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288648.

The product of its digits is 1244160, while the sum is 55.

The square root of 196819858 is about 14029.2500868721. The cubic root of 196819858 is about 581.6873751555.

The spelling of 196819858 in words is "one hundred ninety-six million, eight hundred nineteen thousand, eight hundred fifty-eight".