8161050018 has 32 divisors (see below), whose sum is σ = 18380316672. Its totient is φ = 2393269200.

The previous prime is 8161050013. The next prime is 8161050083. The reversal of 8161050018 is 8100501618.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8161050011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1992346 + ... + 1996437.

It is an arithmetic number, because the mean of its divisors is an integer number (574384896).

Almost surely, 2^8161050018 is an apocalyptic number.

8161050018 is an abundant number, since it is smaller than the sum of its proper divisors (10219266654).

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

8161050018 is a wasteful number, since it uses less digits than its factorization.

8161050018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988830.

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 8161050018 is about 90338.5300854514. The cubic root of 8161050018 is about 2013.3317693352.

The spelling of 8161050018 in words is "eight billion, one hundred sixty-one million, fifty thousand, eighteen".