2193138 has 36 divisors (see below), whose sum is σ = 4938570. Its totient is φ = 703296.

The previous prime is 2193137. The next prime is 2193167. The reversal of 2193138 is 8313912.

It can be written as a sum of positive squares in 3 ways, for example, as 2169729 + 23409 = 1473^2 + 153^2 .

It is not an unprimeable number, because it can be changed into a prime (2193137) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24598 + ... + 24686.

2^2193138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2193138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2469285).

2193138 is an abundant number, since it is smaller than the sum of its proper divisors (2745432).

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

2193138 is a wasteful number, since it uses less digits than its factorization.

2193138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 131 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2193138 is about 1480.9247111180. The cubic root of 2193138 is about 129.9237817524.

The spelling of 2193138 in words is "two million, one hundred ninety-three thousand, one hundred thirty-eight".