196691459 has 4 divisors (see below), whose sum is σ = 198719304. Its totient is φ = 194663616.

The previous prime is 196691437. The next prime is 196691461. The reversal of 196691459 is 954196691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 196691459 - 2⁸ = 196691203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196601459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013777 + ... + 1013970.

It is an arithmetic number, because the mean of its divisors is an integer number (49679826).

Almost surely, 2^196691459 is an apocalyptic number.

196691459 is a deficient number, since it is larger than the sum of its proper divisors (2027845).

196691459 is an equidigital number, since it uses as much as digits as its factorization.

196691459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027844.

The product of its digits is 524880, while the sum is 50.

The square root of 196691459 is about 14024.6732225746. The cubic root of 196691459 is about 581.5608562068.

The spelling of 196691459 in words is "one hundred ninety-six million, six hundred ninety-one thousand, four hundred fifty-nine".