1281883 has 2 divisors, whose sum is σ = 1281884. Its totient is φ = 1281882.

The previous prime is 1281871. The next prime is 1281899. The reversal of 1281883 is 3881821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1281883 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1281803) 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, 640941 + 640942.

It is an arithmetic number, because the mean of its divisors is an integer number (640942).

2^1281883 is an apocalyptic number.

1281883 is a deficient number, since it is larger than the sum of its proper divisors (1).

1281883 is an equidigital number, since it uses as much as digits as its factorization.

1281883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 31.

The square root of 1281883 is about 1132.2027203642. The cubic root of 1281883 is about 108.6299207476.

The spelling of 1281883 in words is "one million, two hundred eighty-one thousand, eight hundred eighty-three".