2215165745 has 8 divisors (see below), whose sum is σ = 2862675816. Its totient is φ = 1635814656.

The previous prime is 2215165703. The next prime is 2215165751. The reversal of 2215165745 is 5475615122.

It can be written as a sum of positive squares in 4 ways, for example, as 21086464 + 2194079281 = 4592^2 + 46841^2 .

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-2215165745 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215165699 and 2215165708.

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, 17039672 + ... + 17039801.

It is an arithmetic number, because the mean of its divisors is an integer number (357834477).

Almost surely, 2^2215165745 is an apocalyptic number.

It is an amenable number.

2215165745 is a deficient number, since it is larger than the sum of its proper divisors (647510071).

2215165745 is a wasteful number, since it uses less digits than its factorization.

2215165745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34079491.

The product of its digits is 84000, while the sum is 38.

The square root of 2215165745 is about 47065.5473249807. The cubic root of 2215165745 is about 1303.5731570650.

The spelling of 2215165745 in words is "two billion, two hundred fifteen million, one hundred sixty-five thousand, seven hundred forty-five".