18828001 has 2 divisors, whose sum is σ = 18828002. Its totient is φ = 18828000.

The previous prime is 18827983. The next prime is 18828011. The reversal of 18828001 is 10082881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16394401 + 2433600 = 4049^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 18828001 - 2⁹ = 18827489 is a prime.

It is not a weakly prime, because it can be changed into another prime (18828011) 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, 9414000 + 9414001.

It is an arithmetic number, because the mean of its divisors is an integer number (9414001).

Almost surely, 2^18828001 is an apocalyptic number.

It is an amenable number.

18828001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18828001 is an equidigital number, since it uses as much as digits as its factorization.

18828001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 18828001 is about 4339.1244508541. The cubic root of 18828001 is about 266.0325256551.

The spelling of 18828001 in words is "eighteen million, eight hundred twenty-eight thousand, one".