2169138 has 8 divisors (see below), whose sum is σ = 4338288. Its totient is φ = 723044.

The previous prime is 2169137. The next prime is 2169143. The reversal of 2169138 is 8319612.

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

2169138 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2169133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180756 + ... + 180767.

It is an arithmetic number, because the mean of its divisors is an integer number (542286).

2^2169138 is an apocalyptic number.

2169138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2169138 is a wasteful number, since it uses less digits than its factorization.

2169138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361528.

The product of its digits is 2592, while the sum is 30.

The square root of 2169138 is about 1472.7993753394. The cubic root of 2169138 is about 129.4481140559.

The spelling of 2169138 in words is "two million, one hundred sixty-nine thousand, one hundred thirty-eight".