1085809875 has 96 divisors (see below), whose sum is σ = 1962994176. Its totient is φ = 531960000.

The previous prime is 1085809871. The next prime is 1085809877. The reversal of 1085809875 is 5789085801.

It is not a de Polignac number, because 1085809875 - 2² = 1085809871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085809871) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8288560 + ... + 8288690.

It is an arithmetic number, because the mean of its divisors is an integer number (20447856).

Almost surely, 2^1085809875 is an apocalyptic number.

1085809875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1085809875 is a deficient number, since it is larger than the sum of its proper divisors (877184301).

1085809875 is a wasteful number, since it uses less digits than its factorization.

1085809875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 51.

The square root of 1085809875 is about 32951.6293223871. The cubic root of 1085809875 is about 1027.8220466823.

The spelling of 1085809875 in words is "one billion, eighty-five million, eight hundred nine thousand, eight hundred seventy-five".