19733401 has 2 divisors, whose sum is σ = 19733402. Its totient is φ = 19733400.

The previous prime is 19733383. The next prime is 19733429. The reversal of 19733401 is 10433791.

It is an a-pointer prime, because the next prime (19733429) can be obtained adding 19733401 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 767376 = 4355^2 + 876^2 .

It is an emirp because it is prime and its reverse (10433791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19733401 - 2¹⁵ = 19700633 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19733401.

It is not a weakly prime, because it can be changed into another prime (19733201) 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, 9866700 + 9866701.

It is an arithmetic number, because the mean of its divisors is an integer number (9866701).

Almost surely, 2^19733401 is an apocalyptic number.

It is an amenable number.

19733401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19733401 is an equidigital number, since it uses as much as digits as its factorization.

19733401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 19733401 is about 4442.2292826913. The cubic root of 19733401 is about 270.2302608210.

The spelling of 19733401 in words is "nineteen million, seven hundred thirty-three thousand, four hundred one".