19323961 has 2 divisors, whose sum is σ = 19323962. Its totient is φ = 19323960.

The previous prime is 19323937. The next prime is 19323971. The reversal of 19323961 is 16932391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12033961 + 7290000 = 3469^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 19323961 - 2⁵ = 19323929 is a prime.

It is not a weakly prime, because it can be changed into another prime (19323901) 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, 9661980 + 9661981.

It is an arithmetic number, because the mean of its divisors is an integer number (9661981).

Almost surely, 2^19323961 is an apocalyptic number.

It is an amenable number.

19323961 is a deficient number, since it is larger than the sum of its proper divisors (1).

19323961 is an equidigital number, since it uses as much as digits as its factorization.

19323961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 19323961 is about 4395.9027514266. The cubic root of 19323961 is about 268.3482191074.

The spelling of 19323961 in words is "nineteen million, three hundred twenty-three thousand, nine hundred sixty-one".