8195018085 has 24 divisors (see below), whose sum is σ = 14253201144. Its totient is φ = 4355752320.

The previous prime is 8195018077. The next prime is 8195018087. The reversal of 8195018085 is 5808105918.

It can be written as a sum of positive squares in 4 ways, for example, as 3085913601 + 5109104484 = 55551^2 + 71478^2 .

It is not a de Polignac number, because 8195018085 - 2³ = 8195018077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8195018085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8195018087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297586 + ... + 323955.

It is an arithmetic number, because the mean of its divisors is an integer number (593883381).

Almost surely, 2^8195018085 is an apocalyptic number.

It is an amenable number.

8195018085 is a deficient number, since it is larger than the sum of its proper divisors (6058183059).

8195018085 is a wasteful number, since it uses less digits than its factorization.

8195018085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621845 (or 621842 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The square root of 8195018085 is about 90526.3391781641. The cubic root of 8195018085 is about 2016.1212112082.

The spelling of 8195018085 in words is "eight billion, one hundred ninety-five million, eighteen thousand, eighty-five".