8161054618 has 8 divisors (see below), whose sum is σ = 12259047060. Its totient is φ = 4074705600.

The previous prime is 8161054613. The next prime is 8161054661. The reversal of 8161054618 is 8164501618.

It can be written as a sum of positive squares in 2 ways, for example, as 6334090569 + 1826964049 = 79587^2 + 42743^2 .

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

It is not an unprimeable number, because it can be changed into a prime (8161054613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2909103 + ... + 2911906.

Almost surely, 2^8161054618 is an apocalyptic number.

8161054618 is a deficient number, since it is larger than the sum of its proper divisors (4097992442).

8161054618 is a wasteful number, since it uses less digits than its factorization.

8161054618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821712.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 8161054618 is about 90338.5555452377. Note that the first 4 decimals coincide. The cubic root of 8161054618 is about 2013.3321476086.

The spelling of 8161054618 in words is "eight billion, one hundred sixty-one million, fifty-four thousand, six hundred eighteen".