196532891 has 2 divisors, whose sum is σ = 196532892. Its totient is φ = 196532890.

The previous prime is 196532887. The next prime is 196532923. The reversal of 196532891 is 198235691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196532891 - 2² = 196532887 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196532821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98266445 + 98266446.

It is an arithmetic number, because the mean of its divisors is an integer number (98266446).

Almost surely, 2^196532891 is an apocalyptic number.

196532891 is a deficient number, since it is larger than the sum of its proper divisors (1).

196532891 is an equidigital number, since it uses as much as digits as its factorization.

196532891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 44.

The square root of 196532891 is about 14019.0189029047. The cubic root of 196532891 is about 581.4045339912.

The spelling of 196532891 in words is "one hundred ninety-six million, five hundred thirty-two thousand, eight hundred ninety-one".