163856090618 has 8 divisors (see below), whose sum is σ = 268128148320. Its totient is φ = 74480041180.

The previous prime is 163856090617. The next prime is 163856090621. The reversal of 163856090618 is 816090658361.

163856090618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×163856090618² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163856090618.

It is not an unprimeable number, because it can be changed into a prime (163856090617) 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 3 ways as a sum of consecutive naturals, for example, 3724002038 + ... + 3724002081.

It is an arithmetic number, because the mean of its divisors is an integer number (33516018540).

Almost surely, 2^163856090618 is an apocalyptic number.

163856090618 is a deficient number, since it is larger than the sum of its proper divisors (104272057702).

163856090618 is a wasteful number, since it uses less digits than its factorization.

163856090618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448004132.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 163856090618 in words is "one hundred sixty-three billion, eight hundred fifty-six million, ninety thousand, six hundred eighteen".