1801273 has 2 divisors, whose sum is σ = 1801274. Its totient is φ = 1801272.

The previous prime is 1801259. The next prime is 1801297. The reversal of 1801273 is 3721081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075369 + 725904 = 1037^2 + 852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1801273 - 2¹³ = 1793081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1801213) 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, 900636 + 900637.

It is an arithmetic number, because the mean of its divisors is an integer number (900637).

2^1801273 is an apocalyptic number.

It is an amenable number.

1801273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801273 is an equidigital number, since it uses as much as digits as its factorization.

1801273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1801273 is about 1342.1151217388. The cubic root of 1801273 is about 121.6727096100.

The spelling of 1801273 in words is "one million, eight hundred one thousand, two hundred seventy-three".