2005542165 has 16 divisors (see below), whose sum is σ = 3500582976. Its totient is φ = 972384000.

The previous prime is 2005542151. The next prime is 2005542181. The reversal of 2005542165 is 5612455002.

It is not a de Polignac number, because 2005542165 - 2¹⁸ = 2005280021 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6077236 + ... + 6077565.

It is an arithmetic number, because the mean of its divisors is an integer number (218786436).

Almost surely, 2^2005542165 is an apocalyptic number.

It is an amenable number.

2005542165 is a deficient number, since it is larger than the sum of its proper divisors (1495040811).

2005542165 is a wasteful number, since it uses less digits than its factorization.

2005542165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12154820.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2005542165 is about 44783.2799714358. The cubic root of 2005542165 is about 1261.0837582926.

Adding to 2005542165 its reverse (5612455002), we get a palindrome (7617997167).

The spelling of 2005542165 in words is "two billion, five million, five hundred forty-two thousand, one hundred sixty-five".