1609688001616 has 20 divisors (see below), whose sum is σ = 3118793365600. Its totient is φ = 804838100832.

The previous prime is 1609688001601. The next prime is 1609688001709. The reversal of 1609688001616 is 6161008869061.

It is a happy number.

It is a super-2 number, since 2×1609688001616² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2612455 + ... + 3169273.

It is an arithmetic number, because the mean of its divisors is an integer number (155939668280).

Almost surely, 2^{1609688001616} is an apocalyptic number.

1609688001616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1609688001616 is a deficient number, since it is larger than the sum of its proper divisors (1509105363984).

1609688001616 is a wasteful number, since it uses less digits than its factorization.

1609688001616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737506 (or 737500 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 1609688001616 in words is "one trillion, six hundred nine billion, six hundred eighty-eight million, one thousand, six hundred sixteen".