1609445375994 has 64 divisors (see below), whose sum is σ = 3340492185600. Its totient is φ = 516401645760.

The previous prime is 1609445375983. The next prime is 1609445376013. The reversal of 1609445375994 is 4995735449061.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175182669 + ... + 175191855.

It is an arithmetic number, because the mean of its divisors is an integer number (52195190400).

Almost surely, 2^{1609445375994} is an apocalyptic number.

1609445375994 is an abundant number, since it is smaller than the sum of its proper divisors (1731046809606).

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

1609445375994 is a wasteful number, since it uses less digits than its factorization.

1609445375994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14155.

The product of its (nonzero) digits is 146966400, while the sum is 66.

The spelling of 1609445375994 in words is "one trillion, six hundred nine billion, four hundred forty-five million, three hundred seventy-five thousand, nine hundred ninety-four".