1800473 has 2 divisors, whose sum is σ = 1800474. Its totient is φ = 1800472.

The previous prime is 1800451. The next prime is 1800493. The reversal of 1800473 is 3740081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1630729 + 169744 = 1277^2 + 412^2 .

It is an emirp because it is prime and its reverse (3740081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1800473 - 2¹⁶ = 1734937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1800413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900236 + 900237.

It is an arithmetic number, because the mean of its divisors is an integer number (900237).

2^1800473 is an apocalyptic number.

It is an amenable number.

1800473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800473 is an equidigital number, since it uses as much as digits as its factorization.

1800473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1800473 is about 1341.8170516132. The cubic root of 1800473 is about 121.6546940951.

The spelling of 1800473 in words is "one million, eight hundred thousand, four hundred seventy-three".