2161041573 has 8 divisors (see below), whose sum is σ = 2959264288. Its totient is φ = 1401756624.

The previous prime is 2161041541. The next prime is 2161041577. The reversal of 2161041573 is 3751401612.

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

It is not a de Polignac number, because 2161041573 - 2⁵ = 2161041541 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 2161041573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161041577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9734311 + ... + 9734532.

It is an arithmetic number, because the mean of its divisors is an integer number (369908036).

Almost surely, 2^2161041573 is an apocalyptic number.

It is an amenable number.

2161041573 is a deficient number, since it is larger than the sum of its proper divisors (798222715).

2161041573 is a wasteful number, since it uses less digits than its factorization.

2161041573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19468883.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 2161041573 is about 46487.0043453006. The cubic root of 2161041573 is about 1292.8685585013.

The spelling of 2161041573 in words is "two billion, one hundred sixty-one million, forty-one thousand, five hundred seventy-three".