8159945285 has 8 divisors (see below), whose sum is σ = 9795591960. Its totient is φ = 6525517824.

The previous prime is 8159945273. The next prime is 8159945303. The reversal of 8159945285 is 5825499518.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17048641 + 8142896644 = 4129^2 + 90238^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8159945285 - 2¹⁸ = 8159683141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8159945285.

It is a congruent 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, 290012 + ... + 316901.

It is an arithmetic number, because the mean of its divisors is an integer number (1224448995).

Almost surely, 2^8159945285 is an apocalyptic number.

It is an amenable number.

8159945285 is a deficient number, since it is larger than the sum of its proper divisors (1635646675).

8159945285 is a wasteful number, since it uses less digits than its factorization.

8159945285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609607.

The product of its digits is 5184000, while the sum is 56.

The square root of 8159945285 is about 90332.4154719667. The cubic root of 8159945285 is about 2013.2409193257.

The spelling of 8159945285 in words is "eight billion, one hundred fifty-nine million, nine hundred forty-five thousand, two hundred eighty-five".