196091919 has 12 divisors (see below), whose sum is σ = 283592400. Its totient is φ = 130567104.

The previous prime is 196091893. The next prime is 196091927. The reversal of 196091919 is 919190691.

196091919 is a `hidden beast` number, since 19 + 609 + 19 + 19 = 666.

It is not a de Polignac number, because 196091919 - 2⁸ = 196091663 is a prime.

It is a super-2 number, since 2×196091919² = 76904081394205122, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196091969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5434 + ... + 20535.

It is an arithmetic number, because the mean of its divisors is an integer number (23632700).

Almost surely, 2^196091919 is an apocalyptic number.

196091919 is a deficient number, since it is larger than the sum of its proper divisors (87500481).

196091919 is a wasteful number, since it uses less digits than its factorization.

196091919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26814 (or 26811 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 45.

The square root of 196091919 is about 14003.2824366289. The cubic root of 196091919 is about 580.9693649091.

It can be divided in two parts, 19609 and 1919, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 196091919 in words is "one hundred ninety-six million, ninety-one thousand, nine hundred nineteen".