1085185879 has 4 divisors (see below), whose sum is σ = 1103578920. Its totient is φ = 1066792840.

The previous prime is 1085185861. The next prime is 1085185901. The reversal of 1085185879 is 9785815801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9785815801 = 24407 ⋅400943.

It is a cyclic number.

It is not a de Polignac number, because 1085185879 - 2⁵ = 1085185847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085185819) 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 in 3 ways as a sum of consecutive naturals, for example, 9196432 + ... + 9196549.

It is an arithmetic number, because the mean of its divisors is an integer number (275894730).

Almost surely, 2^1085185879 is an apocalyptic number.

1085185879 is a deficient number, since it is larger than the sum of its proper divisors (18393041).

1085185879 is an equidigital number, since it uses as much as digits as its factorization.

1085185879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18393040.

The product of its (nonzero) digits is 806400, while the sum is 52.

The square root of 1085185879 is about 32942.1595983020. The cubic root of 1085185879 is about 1027.6251184850.

The spelling of 1085185879 in words is "one billion, eighty-five million, one hundred eighty-five thousand, eight hundred seventy-nine".