1608985842 has 32 divisors (see below), whose sum is σ = 3438547200. Its totient is φ = 500145408.

The previous prime is 1608985841. The next prime is 1608985867. The reversal of 1608985842 is 2485898061.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1608985841) 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, 61242 + ... + 83477.

It is an arithmetic number, because the mean of its divisors is an integer number (107454600).

Almost surely, 2^1608985842 is an apocalyptic number.

1608985842 is an abundant number, since it is smaller than the sum of its proper divisors (1829561358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1608985842 is a wasteful number, since it uses less digits than its factorization.

1608985842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144850.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The square root of 1608985842 is about 40112.1657605271. The cubic root of 1608985842 is about 1171.7925725035.

The spelling of 1608985842 in words is "one billion, six hundred eight million, nine hundred eighty-five thousand, eight hundred forty-two".