20003719 has 2 divisors, whose sum is σ = 20003720. Its totient is φ = 20003718.

The previous prime is 20003701. The next prime is 20003801. The reversal of 20003719 is 91730002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20003719 - 2¹⁷ = 19872647 is a prime.

It is a super-2 number, since 2×20003719² = 800297547661922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20003719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20007719) 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, 10001859 + 10001860.

It is an arithmetic number, because the mean of its divisors is an integer number (10001860).

Almost surely, 2^20003719 is an apocalyptic number.

20003719 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003719 is an equidigital number, since it uses as much as digits as its factorization.

20003719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 20003719 is about 4472.5517325124. The cubic root of 20003719 is about 271.4585854819.

The spelling of 20003719 in words is "twenty million, three thousand, seven hundred nineteen".