2100618 has 48 divisors (see below), whose sum is σ = 5031936. Its totient is φ = 629280.

The previous prime is 2100607. The next prime is 2100629. The reversal of 2100618 is 8160012.

It is an interprime number because it is at equal distance from previous prime (2100607) and next prime (2100629).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2100618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10903 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (104832).

2^2100618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2515968).

2100618 is an abundant number, since it is smaller than the sum of its proper divisors (2931318).

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

2100618 is a wasteful number, since it uses less digits than its factorization.

2100618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2100618 is about 1449.3508891914. The cubic root of 2100618 is about 128.0704771385.

The spelling of 2100618 in words is "two million, one hundred thousand, six hundred eighteen".