196493091 has 16 divisors (see below), whose sum is σ = 264071808. Its totient is φ = 129960000.

The previous prime is 196493083. The next prime is 196493113. The reversal of 196493091 is 190394691.

It is not a de Polignac number, because 196493091 - 2³ = 196493083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196493081) 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, 343836 + ... + 344406.

It is an arithmetic number, because the mean of its divisors is an integer number (16504488).

Almost surely, 2^196493091 is an apocalyptic number.

196493091 is a deficient number, since it is larger than the sum of its proper divisors (67578717).

196493091 is a wasteful number, since it uses less digits than its factorization.

196493091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 196493091 is about 14017.5993308412. The cubic root of 196493091 is about 581.3652844750.

The spelling of 196493091 in words is "one hundred ninety-six million, four hundred ninety-three thousand, ninety-one".