8051043618 has 18 divisors (see below), whose sum is σ = 17444752689. Its totient is φ = 2683554312.

The previous prime is 8051043607. The next prime is 8051043631. The reversal of 8051043618 is 8163401508.

8051043618 is a `hidden beast` number, since 80 + 510 + 4 + 3 + 61 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6444396729 + 1606646889 = 80277^2 + 40083^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=63447.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 370108 + ... + 391256.

Almost surely, 2^8051043618 is an apocalyptic number.

8051043618 is an abundant number, since it is smaller than the sum of its proper divisors (9393709071).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8051043618 is an frugal number, since it uses more digits than its factorization.

8051043618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42306 (or 21154 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 8051043618 is about 89727.6078918858. The cubic root of 8051043618 is about 2004.2446200607.

The spelling of 8051043618 in words is "eight billion, fifty-one million, forty-three thousand, six hundred eighteen".