2148814109 has 8 divisors (see below), whose sum is σ = 2376651480. Its totient is φ = 1929911616.

The previous prime is 2148814099. The next prime is 2148814117. The reversal of 2148814109 is 9014188412.

2148814109 = 426² + 427² + ... + 1868².

It can be written as a sum of positive squares in 4 ways, for example, as 91738084 + 2057076025 = 9578^2 + 45355^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2148814109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148814159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2233214 + ... + 2234175.

It is an arithmetic number, because the mean of its divisors is an integer number (297081435).

Almost surely, 2^2148814109 is an apocalyptic number.

It is an amenable number.

2148814109 is a deficient number, since it is larger than the sum of its proper divisors (227837371).

2148814109 is a wasteful number, since it uses less digits than its factorization.

2148814109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467439.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 2148814109 is about 46355.3029221037. The cubic root of 2148814109 is about 1290.4255369543.

The spelling of 2148814109 in words is "two billion, one hundred forty-eight million, eight hundred fourteen thousand, one hundred nine".