1085874469 has 2 divisors, whose sum is σ = 1085874470. Its totient is φ = 1085874468.

The previous prime is 1085874457. The next prime is 1085874509. The reversal of 1085874469 is 9644785801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 657922500 + 427951969 = 25650^2 + 20687^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085874469 - 2⁵ = 1085874437 is a prime.

It is a super-2 number, since 2×1085874469² = 2358246724852063922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085824469) 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, 542937234 + 542937235.

It is an arithmetic number, because the mean of its divisors is an integer number (542937235).

Almost surely, 2^1085874469 is an apocalyptic number.

It is an amenable number.

1085874469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085874469 is an equidigital number, since it uses as much as digits as its factorization.

1085874469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 1085874469 is about 32952.6094414388. The cubic root of 1085874469 is about 1027.8424277277.

The spelling of 1085874469 in words is "one billion, eighty-five million, eight hundred seventy-four thousand, four hundred sixty-nine".