196523993 has 2 divisors, whose sum is σ = 196523994. Its totient is φ = 196523992.

The previous prime is 196523969. The next prime is 196524017. The reversal of 196523993 is 399325691.

It is a balanced prime because it is at equal distance from previous prime (196523969) and next prime (196524017).

It can be written as a sum of positive squares in only one way, i.e., 136492489 + 60031504 = 11683^2 + 7748^2 .

It is a cyclic number.

It is not a de Polignac number, because 196523993 - 2¹⁰ = 196522969 is a prime.

It is not a weakly prime, because it can be changed into another prime (196523693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98261996 + 98261997.

It is an arithmetic number, because the mean of its divisors is an integer number (98261997).

Almost surely, 2^196523993 is an apocalyptic number.

It is an amenable number.

196523993 is a deficient number, since it is larger than the sum of its proper divisors (1).

196523993 is an equidigital number, since it uses as much as digits as its factorization.

196523993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 47.

The square root of 196523993 is about 14018.7015447223. The cubic root of 196523993 is about 581.3957595216.

The spelling of 196523993 in words is "one hundred ninety-six million, five hundred twenty-three thousand, nine hundred ninety-three".