4520165945 has 8 divisors (see below), whose sum is σ = 5425548936. Its totient is φ = 3615232896.

The previous prime is 4520165933. The next prime is 4520165983. The reversal of 4520165945 is 5495610254.

4520165945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1356890896 + 3163275049 = 36836^2 + 56243^2 .

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-4520165945 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89972 + ... + 130901.

It is an arithmetic number, because the mean of its divisors is an integer number (678193617).

Almost surely, 2^4520165945 is an apocalyptic number.

It is an amenable number.

4520165945 is a deficient number, since it is larger than the sum of its proper divisors (905382991).

4520165945 is a wasteful number, since it uses less digits than its factorization.

4520165945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224971.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 4520165945 is about 67232.1793860648. The cubic root of 4520165945 is about 1653.4261157455.

The spelling of 4520165945 in words is "four billion, five hundred twenty million, one hundred sixty-five thousand, nine hundred forty-five".