3998081719 has 2 divisors, whose sum is σ = 3998081720. Its totient is φ = 3998081718.

The previous prime is 3998081701. The next prime is 3998081729. The reversal of 3998081719 is 9171808993.

3998081719 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3998081719 - 2¹⁷ = 3997950647 is a prime.

It is a super-2 number, since 2×3998081719² = 31969314863603989922, 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 3998081719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3998081729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999040859 + 1999040860.

It is an arithmetic number, because the mean of its divisors is an integer number (1999040860).

Almost surely, 2^3998081719 is an apocalyptic number.

3998081719 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998081719 is an equidigital number, since it uses as much as digits as its factorization.

3998081719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 55.

The square root of 3998081719 is about 63230.3860418391. The cubic root of 3998081719 is about 1587.1472546195.

The spelling of 3998081719 in words is "three billion, nine hundred ninety-eight million, eighty-one thousand, seven hundred nineteen".