196474891 has 2 divisors, whose sum is σ = 196474892. Its totient is φ = 196474890.

The previous prime is 196474879. The next prime is 196474909. The reversal of 196474891 is 198474691.

It is a weak prime.

It is an emirp because it is prime and its reverse (198474691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196474891 - 2⁹ = 196474379 is a prime.

It is not a weakly prime, because it can be changed into another prime (196474841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98237445 + 98237446.

It is an arithmetic number, because the mean of its divisors is an integer number (98237446).

Almost surely, 2^196474891 is an apocalyptic number.

196474891 is a deficient number, since it is larger than the sum of its proper divisors (1).

196474891 is an equidigital number, since it uses as much as digits as its factorization.

196474891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 196474891 is about 14016.9501318939. The cubic root of 196474891 is about 581.3473344378.

The spelling of 196474891 in words is "one hundred ninety-six million, four hundred seventy-four thousand, eight hundred ninety-one".