2068818161 has 8 divisors (see below), whose sum is σ = 2101031904. Its totient is φ = 2036643840.

The previous prime is 2068818151. The next prime is 2068818181. The reversal of 2068818161 is 1618188602.

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 2068818161 - 2²² = 2064623857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2068818121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106481 + ... + 124401.

It is an arithmetic number, because the mean of its divisors is an integer number (262628988).

Almost surely, 2^2068818161 is an apocalyptic number.

It is an amenable number.

2068818161 is a deficient number, since it is larger than the sum of its proper divisors (32213743).

2068818161 is a wasteful number, since it uses less digits than its factorization.

2068818161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19711.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 2068818161 is about 45484.2627839564. The cubic root of 2068818161 is about 1274.2093082413.

The spelling of 2068818161 in words is "two billion, sixty-eight million, eight hundred eighteen thousand, one hundred sixty-one".