842161618 has 8 divisors (see below), whose sum is σ = 1266161148. Its totient is φ = 420107904.

The previous prime is 842161613. The next prime is 842161667. The reversal of 842161618 is 816161248.

842161618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 630662769 + 211498849 = 25113^2 + 14543^2 .

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 (842161613) 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, 485371 + ... + 487102.

Almost surely, 2^842161618 is an apocalyptic number.

842161618 is a deficient number, since it is larger than the sum of its proper divisors (423999530).

842161618 is a wasteful number, since it uses less digits than its factorization.

842161618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972908.

The product of its digits is 18432, while the sum is 37.

The square root of 842161618 is about 29020.0209855196. The cubic root of 842161618 is about 944.3474561543.

The spelling of 842161618 in words is "eight hundred forty-two million, one hundred sixty-one thousand, six hundred eighteen".