19832161 has 2 divisors, whose sum is σ = 19832162. Its totient is φ = 19832160.

The previous prime is 19832117. The next prime is 19832171. The reversal of 19832161 is 16123891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16353936 + 3478225 = 4044^2 + 1865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19832161 is a prime.

It is not a weakly prime, because it can be changed into another prime (19832171) 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, 9916080 + 9916081.

It is an arithmetic number, because the mean of its divisors is an integer number (9916081).

Almost surely, 2^19832161 is an apocalyptic number.

It is an amenable number.

19832161 is a deficient number, since it is larger than the sum of its proper divisors (1).

19832161 is an equidigital number, since it uses as much as digits as its factorization.

19832161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 31.

The square root of 19832161 is about 4453.3314496004. The cubic root of 19832161 is about 270.6803191107.

The spelling of 19832161 in words is "nineteen million, eight hundred thirty-two thousand, one hundred sixty-one".