1801853 has 2 divisors, whose sum is σ = 1801854. Its totient is φ = 1801852.

The previous prime is 1801823. The next prime is 1801867. The reversal of 1801853 is 3581081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1776889 + 24964 = 1333^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 1801853 - 2¹⁰ = 1800829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1801823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900926 + 900927.

It is an arithmetic number, because the mean of its divisors is an integer number (900927).

2^1801853 is an apocalyptic number.

It is an amenable number.

1801853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801853 is an equidigital number, since it uses as much as digits as its factorization.

1801853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1801853 is about 1342.3311811919. The cubic root of 1801853 is about 121.6857675230.

The spelling of 1801853 in words is "one million, eight hundred one thousand, eight hundred fifty-three".