102159618 has 64 divisors (see below), whose sum is σ = 240468480. Its totient is φ = 28598400.

The previous prime is 102159593. The next prime is 102159619. The reversal of 102159618 is 816951201.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102159619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50421 + ... + 52407.

It is an arithmetic number, because the mean of its divisors is an integer number (3757320).

Almost surely, 2^102159618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102159618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120234240).

102159618 is an abundant number, since it is smaller than the sum of its proper divisors (138308862).

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

102159618 is a wasteful number, since it uses less digits than its factorization.

102159618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 102159618 is about 10107.4041177743. The cubic root of 102159618 is about 467.4764673066.

The spelling of 102159618 in words is "one hundred two million, one hundred fifty-nine thousand, six hundred eighteen".