1801073 has 2 divisors, whose sum is σ = 1801074. Its totient is φ = 1801072.

The previous prime is 1801039. The next prime is 1801091. The reversal of 1801073 is 3701081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1658944 + 142129 = 1288^2 + 377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1801073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1801003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900536 + 900537.

It is an arithmetic number, because the mean of its divisors is an integer number (900537).

2^1801073 is an apocalyptic number.

It is an amenable number.

1801073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801073 is an equidigital number, since it uses as much as digits as its factorization.

1801073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1801073 is about 1342.0406104139. The cubic root of 1801073 is about 121.6682062314.

The spelling of 1801073 in words is "one million, eight hundred one thousand, seventy-three".