1085289172 has 36 divisors (see below), whose sum is σ = 2099442240. Its totient is φ = 490518160.

The previous prime is 1085289157. The next prime is 1085289181. The reversal of 1085289172 is 2719825801.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 80373 + ... + 92899.

It is an arithmetic number, because the mean of its divisors is an integer number (58317840).

Almost surely, 2^1085289172 is an apocalyptic number.

It is an amenable number.

1085289172 is a deficient number, since it is larger than the sum of its proper divisors (1014153068).

1085289172 is a wasteful number, since it uses less digits than its factorization.

1085289172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12732 (or 12719 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1085289172 is about 32943.7273543842. The cubic root of 1085289172 is about 1027.6577221510.

The spelling of 1085289172 in words is "one billion, eighty-five million, two hundred eighty-nine thousand, one hundred seventy-two".