2138364 has 18 divisors (see below), whose sum is σ = 5405400. Its totient is φ = 712776.

The previous prime is 2138363. The next prime is 2138371. The reversal of 2138364 is 4638312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×2138364³ = 29333653505776717632, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29664 + ... + 29735.

It is an arithmetic number, because the mean of its divisors is an integer number (300300).

2^2138364 is an apocalyptic number.

It is an amenable number.

2138364 is an abundant number, since it is smaller than the sum of its proper divisors (3267036).

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

2138364 is a wasteful number, since it uses less digits than its factorization.

2138364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59409 (or 59404 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 2138364 is about 1462.3146036336. The cubic root of 2138364 is about 128.8330271643.

The spelling of 2138364 in words is "two million, one hundred thirty-eight thousand, three hundred sixty-four".