2136618 has 60 divisors (see below), whose sum is σ = 5310690. Its totient is φ = 641520.

The previous prime is 2136601. The next prime is 2136643. The reversal of 2136618 is 8166312.

It can be written as a sum of positive squares in only one way, i.e., 1656369 + 480249 = 1287^2 + 693^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2136591 and 2136600.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 19548 + ... + 19656.

2^2136618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2136618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655345).

2136618 is an abundant number, since it is smaller than the sum of its proper divisors (3174072).

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

2136618 is a wasteful number, since it uses less digits than its factorization.

2136618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 125 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2136618 is about 1461.7174829631. The cubic root of 2136618 is about 128.7979530428.

The spelling of 2136618 in words is "two million, one hundred thirty-six thousand, six hundred eighteen".