2148109 has 4 divisors (see below), whose sum is σ = 2206204. Its totient is φ = 2090016.

The previous prime is 2148073. The next prime is 2148127. The reversal of 2148109 is 9018412.

It is a happy number.

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 1512900 + 635209 = 1230^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148109 - 2²¹ = 50957 is a prime.

It is a super-2 number, since 2×2148109² = 9228744551762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148149) 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, 28992 + ... + 29065.

It is an arithmetic number, because the mean of its divisors is an integer number (551551).

2^2148109 is an apocalyptic number.

It is an amenable number.

2148109 is a deficient number, since it is larger than the sum of its proper divisors (58095).

2148109 is an equidigital number, since it uses as much as digits as its factorization.

2148109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58094.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2148109 is about 1465.6428623645. The cubic root of 2148109 is about 129.0284375341.

The spelling of 2148109 in words is "two million, one hundred forty-eight thousand, one hundred nine".