1609128674 has 8 divisors (see below), whose sum is σ = 2413898688. Its totient is φ = 804495780.

The previous prime is 1609128673. The next prime is 1609128709. The reversal of 1609128674 is 4768219061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1609128673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3299 + ... + 56825.

It is an arithmetic number, because the mean of its divisors is an integer number (301737336).

Almost surely, 2^1609128674 is an apocalyptic number.

1609128674 is a deficient number, since it is larger than the sum of its proper divisors (804770014).

1609128674 is a wasteful number, since it uses less digits than its factorization.

1609128674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68560.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1609128674 is about 40113.9461284975. The cubic root of 1609128674 is about 1171.8272453846.

The spelling of 1609128674 in words is "one billion, six hundred nine million, one hundred twenty-eight thousand, six hundred seventy-four".