2138873 has 4 divisors (see below), whose sum is σ = 2333328. Its totient is φ = 1944420.

The previous prime is 2138867. The next prime is 2138879. The reversal of 2138873 is 3788312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2138867) and next prime (2138879).

It is a cyclic number.

It is not a de Polignac number, because 2138873 - 2¹⁴ = 2122489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138879) 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, 97211 + ... + 97232.

It is an arithmetic number, because the mean of its divisors is an integer number (583332).

2^2138873 is an apocalyptic number.

It is an amenable number.

2138873 is a deficient number, since it is larger than the sum of its proper divisors (194455).

2138873 is a wasteful number, since it uses less digits than its factorization.

2138873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194454.

The product of its digits is 8064, while the sum is 32.

The square root of 2138873 is about 1462.4886324345. The cubic root of 2138873 is about 128.8432484999.

The spelling of 2138873 in words is "two million, one hundred thirty-eight thousand, eight hundred seventy-three".