19641233 has 2 divisors, whose sum is σ = 19641234. Its totient is φ = 19641232.

The previous prime is 19641221. The next prime is 19641247. The reversal of 19641233 is 33214691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16875664 + 2765569 = 4108^2 + 1663^2 .

It is a cyclic number.

It is not a de Polignac number, because 19641233 - 2⁶ = 19641169 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 19641196 and 19641205.

It is not a weakly prime, because it can be changed into another prime (19641263) 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 as a sum of consecutive naturals, namely, 9820616 + 9820617.

It is an arithmetic number, because the mean of its divisors is an integer number (9820617).

Almost surely, 2^19641233 is an apocalyptic number.

It is an amenable number.

19641233 is a deficient number, since it is larger than the sum of its proper divisors (1).

19641233 is an equidigital number, since it uses as much as digits as its factorization.

19641233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 19641233 is about 4431.8430703264. The cubic root of 19641233 is about 269.8088862467.

The spelling of 19641233 in words is "nineteen million, six hundred forty-one thousand, two hundred thirty-three".