1860281 has 2 divisors, whose sum is σ = 1860282. Its totient is φ = 1860280.

The previous prime is 1860277. The next prime is 1860289. The reversal of 1860281 is 1820681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1666681 + 193600 = 1291^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1860281 - 2² = 1860277 is a prime.

It is a super-2 number, since 2×1860281² = 6921290797922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1860281.

It is not a weakly prime, because it can be changed into another prime (1860289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930140 + 930141.

It is an arithmetic number, because the mean of its divisors is an integer number (930141).

2^1860281 is an apocalyptic number.

It is an amenable number.

1860281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1860281 is an equidigital number, since it uses as much as digits as its factorization.

1860281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1860281 is about 1363.9211854063. The cubic root of 1860281 is about 122.9870874585.

The spelling of 1860281 in words is "one million, eight hundred sixty thousand, two hundred eighty-one".