1601105605 has 8 divisors (see below), whose sum is σ = 2095992864. Its totient is φ = 1164440400.

The previous prime is 1601105603. The next prime is 1601105609. The reversal of 1601105605 is 5065011061.

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

It is not a de Polignac number, because 1601105605 - 2¹ = 1601105603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601105605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601105603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14555451 + ... + 14555560.

It is an arithmetic number, because the mean of its divisors is an integer number (261999108).

Almost surely, 2^1601105605 is an apocalyptic number.

It is an amenable number.

1601105605 is a deficient number, since it is larger than the sum of its proper divisors (494887259).

1601105605 is a wasteful number, since it uses less digits than its factorization.

1601105605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29111027.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1601105605 is about 40013.8176758979. The cubic root of 1601105605 is about 1169.8764339760.

Adding to 1601105605 its reverse (5065011061), we get a palindrome (6666116666).

The spelling of 1601105605 in words is "one billion, six hundred one million, one hundred five thousand, six hundred five".