2158019 has 2 divisors, whose sum is σ = 2158020. Its totient is φ = 2158018.

The previous prime is 2157989. The next prime is 2158027. The reversal of 2158019 is 9108512.

It is a happy number.

2158019 is digitally balanced in base 2, 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 2158019 - 2⁸ = 2157763 is a prime.

It is a super-2 number, since 2×2158019² = 9314092008722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2158069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079009 + 1079010.

It is an arithmetic number, because the mean of its divisors is an integer number (1079010).

2^2158019 is an apocalyptic number.

2158019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158019 is an equidigital number, since it uses as much as digits as its factorization.

2158019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2158019 is about 1469.0197411880. The cubic root of 2158019 is about 129.2265513969.

The spelling of 2158019 in words is "two million, one hundred fifty-eight thousand, nineteen".