1840019 has 2 divisors, whose sum is σ = 1840020. Its totient is φ = 1840018.

The previous prime is 1839997. The next prime is 1840031. The reversal of 1840019 is 9100481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1840019 - 2⁸ = 1839763 is a prime.

It is a super-2 number, since 2×1840019² = 6771339840722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1839976 and 1840003.

It is not a weakly prime, because it can be changed into another prime (1840049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920009 + 920010.

It is an arithmetic number, because the mean of its divisors is an integer number (920010).

2^1840019 is an apocalyptic number.

1840019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840019 is an equidigital number, since it uses as much as digits as its factorization.

1840019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1840019 is about 1356.4730000999. The cubic root of 1840019 is about 122.5389352842.

The spelling of 1840019 in words is "one million, eight hundred forty thousand, nineteen".