1813039 has 2 divisors, whose sum is σ = 1813040. Its totient is φ = 1813038.

The previous prime is 1813003. The next prime is 1813073. The reversal of 1813039 is 9303181.

It is a strong prime.

It is an emirp because it is prime and its reverse (9303181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1813039 - 2⁹ = 1812527 is a prime.

It is a super-2 number, since 2×1813039² = 6574220831042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1813139) 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, 906519 + 906520.

It is an arithmetic number, because the mean of its divisors is an integer number (906520).

2^1813039 is an apocalyptic number.

1813039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813039 is an equidigital number, since it uses as much as digits as its factorization.

1813039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1813039 is about 1346.4913664781. The cubic root of 1813039 is about 121.9370588172.

The spelling of 1813039 in words is "one million, eight hundred thirteen thousand, thirty-nine".