1606853889 has 16 divisors (see below), whose sum is σ = 2520555840. Its totient is φ = 1008221760.

The previous prime is 1606853873. The next prime is 1606853891. The reversal of 1606853889 is 9883586061.

It is not a de Polignac number, because 1606853889 - 2⁴ = 1606853873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1606853789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749927 + ... + 1750844.

It is an arithmetic number, because the mean of its divisors is an integer number (157534740).

Almost surely, 2^1606853889 is an apocalyptic number.

It is an amenable number.

1606853889 is a deficient number, since it is larger than the sum of its proper divisors (913701951).

1606853889 is a wasteful number, since it uses less digits than its factorization.

1606853889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500797 (or 3500791 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 1606853889 is about 40085.5820588900. The cubic root of 1606853889 is about 1171.2747906733.

The spelling of 1606853889 in words is "one billion, six hundred six million, eight hundred fifty-three thousand, eight hundred eighty-nine".