2138845 has 8 divisors (see below), whose sum is σ = 2649600. Its totient is φ = 1655760.

The previous prime is 2138833. The next prime is 2138861. The reversal of 2138845 is 5488312.

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

It is not a de Polignac number, because 2138845 - 2⁵ = 2138813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a d-powerful number, because it can be written as 2¹⁸ + 1 + 3¹³ + 8³ + 8⁴ + 4⁹ + 5⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6745 + ... + 7054.

It is an arithmetic number, because the mean of its divisors is an integer number (331200).

2^2138845 is an apocalyptic number.

It is an amenable number.

2138845 is a deficient number, since it is larger than the sum of its proper divisors (510755).

2138845 is a wasteful number, since it uses less digits than its factorization.

2138845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835.

The product of its digits is 7680, while the sum is 31.

The square root of 2138845 is about 1462.4790596791. The cubic root of 2138845 is about 128.8426862682.

The spelling of 2138845 in words is "two million, one hundred thirty-eight thousand, eight hundred forty-five".