2181163593 has 8 divisors (see below), whose sum is σ = 3323677888. Its totient is φ = 1246379184.

The previous prime is 2181163583. The next prime is 2181163601. The reversal of 2181163593 is 3953611812.

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

It is not a de Polignac number, because 2181163593 - 2⁹ = 2181163081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2181163553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51932446 + ... + 51932487.

It is an arithmetic number, because the mean of its divisors is an integer number (415459736).

Almost surely, 2^2181163593 is an apocalyptic number.

It is an amenable number.

2181163593 is a deficient number, since it is larger than the sum of its proper divisors (1142514295).

2181163593 is a wasteful number, since it uses less digits than its factorization.

2181163593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103864943.

The product of its digits is 38880, while the sum is 39.

The square root of 2181163593 is about 46702.9291693787. The cubic root of 2181163593 is about 1296.8689130661.

The spelling of 2181163593 in words is "two billion, one hundred eighty-one million, one hundred sixty-three thousand, five hundred ninety-three".