1085871001 has 2 divisors, whose sum is σ = 1085871002. Its totient is φ = 1085871000.

The previous prime is 1085870993. The next prime is 1085871013. The reversal of 1085871001 is 1001785801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1069224601 + 16646400 = 32699^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085871001 - 2³ = 1085870993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1085871091) 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, 542935500 + 542935501.

It is an arithmetic number, because the mean of its divisors is an integer number (542935501).

Almost surely, 2^1085871001 is an apocalyptic number.

It is an amenable number.

1085871001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085871001 is an equidigital number, since it uses as much as digits as its factorization.

1085871001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 1085871001 is about 32952.5568203743. The cubic root of 1085871001 is about 1027.8413335062.

The spelling of 1085871001 in words is "one billion, eighty-five million, eight hundred seventy-one thousand, one".