1801039 has 2 divisors, whose sum is σ = 1801040. Its totient is φ = 1801038.

The previous prime is 1801021. The next prime is 1801073. The reversal of 1801039 is 9301081.

It is a weak prime.

It is an emirp because it is prime and its reverse (9301081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1801039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1801339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900519 + 900520.

It is an arithmetic number, because the mean of its divisors is an integer number (900520).

2^1801039 is an apocalyptic number.

1801039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801039 is an equidigital number, since it uses as much as digits as its factorization.

1801039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1801039 is about 1342.0279430772. The cubic root of 1801039 is about 121.6674406239.

The spelling of 1801039 in words is "one million, eight hundred one thousand, thirty-nine".