1205469985 has 8 divisors (see below), whose sum is σ = 1453052160. Its totient is φ = 960050544.

The previous prime is 1205469971. The next prime is 1205470009. The reversal of 1205469985 is 5899645021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1205469985 - 2⁷ = 1205469857 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539455 + ... + 541684.

It is an arithmetic number, because the mean of its divisors is an integer number (181631520).

Almost surely, 2^1205469985 is an apocalyptic number.

It is an amenable number.

1205469985 is a deficient number, since it is larger than the sum of its proper divisors (247582175).

1205469985 is a wasteful number, since it uses less digits than its factorization.

1205469985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081367.

The product of its (nonzero) digits is 777600, while the sum is 49.

The square root of 1205469985 is about 34719.8788160328. The cubic root of 1205469985 is about 1064.2707682497.

It can be divided in two parts, 12054699 and 85, that added together give a square (12054784 = 3472²).

The spelling of 1205469985 in words is "one billion, two hundred five million, four hundred sixty-nine thousand, nine hundred eighty-five".