1601444705 has 16 divisors (see below), whose sum is σ = 2241091200. Its totient is φ = 1098132336.

The previous prime is 1601444681. The next prime is 1601444731. The reversal of 1601444705 is 5074441061.

It is not a de Polignac number, because 1601444705 - 2²² = 1597250401 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465179 + ... + 468608.

It is an arithmetic number, because the mean of its divisors is an integer number (140068200).

Almost surely, 2^1601444705 is an apocalyptic number.

It is an amenable number.

1601444705 is a deficient number, since it is larger than the sum of its proper divisors (639646495).

1601444705 is an frugal number, since it uses more digits than its factorization.

1601444705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933813 (or 933799 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 1601444705 is about 40018.0547378305. The cubic root of 1601444705 is about 1169.9590179718.

Adding to 1601444705 its reverse (5074441061), we get a palindrome (6675885766).

The spelling of 1601444705 in words is "one billion, six hundred one million, four hundred forty-four thousand, seven hundred five".