2215327805 has 8 divisors (see below), whose sum is σ = 2660563800. Its totient is φ = 1770815296.

The previous prime is 2215327787. The next prime is 2215327813. The reversal of 2215327805 is 5087235122.

It can be written as a sum of positive squares in 4 ways, for example, as 391525369 + 1823802436 = 19787^2 + 42706^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215327805 is a prime.

It is a super-2 number, since 2×2215327805² = 9815354567212236050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 174110 + ... + 186399.

It is an arithmetic number, because the mean of its divisors is an integer number (332570475).

Almost surely, 2^2215327805 is an apocalyptic number.

It is an amenable number.

2215327805 is a deficient number, since it is larger than the sum of its proper divisors (445235995).

2215327805 is a wasteful number, since it uses less digits than its factorization.

2215327805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361743.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 2215327805 is about 47067.2689350041. The cubic root of 2215327805 is about 1303.6049457945.

The spelling of 2215327805 in words is "two billion, two hundred fifteen million, three hundred twenty-seven thousand, eight hundred five".