1005089893 has 2 divisors, whose sum is σ = 1005089894. Its totient is φ = 1005089892.

The previous prime is 1005089887. The next prime is 1005089959. The reversal of 1005089893 is 3989805001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968329924 + 36759969 = 31118^2 + 6063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005089893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005089803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502544946 + 502544947.

It is an arithmetic number, because the mean of its divisors is an integer number (502544947).

Almost surely, 2^1005089893 is an apocalyptic number.

It is an amenable number.

1005089893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005089893 is an equidigital number, since it uses as much as digits as its factorization.

1005089893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1005089893 is about 31703.1527296577. The cubic root of 1005089893 is about 1001.6937605555.

The spelling of 1005089893 in words is "one billion, five million, eighty-nine thousand, eight hundred ninety-three".