1209985119 has 12 divisors (see below), whose sum is σ = 1997435856. Its totient is φ = 691420032.

The previous prime is 1209985097. The next prime is 1209985121. The reversal of 1209985119 is 9115899021.

1209985119 is a `hidden beast` number, since 120 + 9 + 9 + 8 + 511 + 9 = 666.

1209985119 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1209985119 - 2⁷ = 1209984991 is a prime.

It is a super-2 number, since 2×1209985119² = 2928127976402888322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209985169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9602994 + ... + 9603119.

It is an arithmetic number, because the mean of its divisors is an integer number (166452988).

Almost surely, 2^1209985119 is an apocalyptic number.

1209985119 is a deficient number, since it is larger than the sum of its proper divisors (787450737).

1209985119 is a wasteful number, since it uses less digits than its factorization.

1209985119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206126 (or 19206123 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 45.

The square root of 1209985119 is about 34784.8403618588. The cubic root of 1209985119 is about 1065.5978683666.

The spelling of 1209985119 in words is "one billion, two hundred nine million, nine hundred eighty-five thousand, one hundred nineteen".