1204865085 has 16 divisors (see below), whose sum is σ = 1930431744. Its totient is φ = 641712192.

The previous prime is 1204865063. The next prime is 1204865111. The reversal of 1204865085 is 5805684021.

It is not a de Polignac number, because 1204865085 - 2²¹ = 1202767933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43797 + ... + 65786.

It is an arithmetic number, because the mean of its divisors is an integer number (120651984).

Almost surely, 2^1204865085 is an apocalyptic number.

1204865085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1204865085 is a deficient number, since it is larger than the sum of its proper divisors (725566659).

1204865085 is a wasteful number, since it uses less digits than its factorization.

1204865085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110324.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 1204865085 is about 34711.1665750375. The cubic root of 1204865085 is about 1064.0927228656.

The spelling of 1204865085 in words is "one billion, two hundred four million, eight hundred sixty-five thousand, eighty-five".