1209004885 has 16 divisors (see below), whose sum is σ = 1591454592. Its totient is φ = 874411200.

The previous prime is 1209004871. The next prime is 1209004897. The reversal of 1209004885 is 5884009021.

It is not a de Polignac number, because 1209004885 - 2⁹ = 1209004373 is a prime.

It is a Duffinian number.

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, 50769 + ... + 70678.

It is an arithmetic number, because the mean of its divisors is an integer number (99465912).

Almost surely, 2^1209004885 is an apocalyptic number.

It is an amenable number.

1209004885 is a deficient number, since it is larger than the sum of its proper divisors (382449707).

1209004885 is a wasteful number, since it uses less digits than its factorization.

1209004885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121644.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 1209004885 is about 34770.7475473278. The cubic root of 1209004885 is about 1065.3100363269.

The spelling of 1209004885 in words is "one billion, two hundred nine million, four thousand, eight hundred eighty-five".