1853281 has 2 divisors, whose sum is σ = 1853282. Its totient is φ = 1853280.

The previous prime is 1853263. The next prime is 1853309. The reversal of 1853281 is 1823581.

It is an a-pointer prime, because the next prime (1853309) can be obtained adding 1853281 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1846881 + 6400 = 1359^2 + 80^2 .

It is an emirp because it is prime and its reverse (1823581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1853281 - 2¹⁷ = 1722209 is a prime.

It is a super-2 number, since 2×1853281² = 6869300929922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1853231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 926640 + 926641.

It is an arithmetic number, because the mean of its divisors is an integer number (926641).

2^1853281 is an apocalyptic number.

It is an amenable number.

1853281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1853281 is an equidigital number, since it uses as much as digits as its factorization.

1853281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 1853281 is about 1361.3526361674. The cubic root of 1853281 is about 122.8326319925.

The spelling of 1853281 in words is "one million, eight hundred fifty-three thousand, two hundred eighty-one".