2148385 has 4 divisors (see below), whose sum is σ = 2578068. Its totient is φ = 1718704.

The previous prime is 2148383. The next prime is 2148397. The reversal of 2148385 is 5838412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221841 + 1926544 = 471^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148385 - 2¹ = 2148383 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 4⁷ + 8⁵ + 3³ + 8⁷ + 5 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2148383) 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, 214834 + ... + 214843.

It is an arithmetic number, because the mean of its divisors is an integer number (644517).

2^2148385 is an apocalyptic number.

It is an amenable number.

2148385 is a deficient number, since it is larger than the sum of its proper divisors (429683).

2148385 is an equidigital number, since it uses as much as digits as its factorization.

2148385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429682.

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

The square root of 2148385 is about 1465.7370159752. The cubic root of 2148385 is about 129.0339633746.

The spelling of 2148385 in words is "two million, one hundred forty-eight thousand, three hundred eighty-five".