148253909 has 4 divisors (see below), whose sum is σ = 151869900. Its totient is φ = 144637920.

The previous prime is 148253891. The next prime is 148253953. The reversal of 148253909 is 909352841.

148253909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 909352841 = 12143 ⋅74887.

It can be written as a sum of positive squares in 2 ways, for example, as 14273284 + 133980625 = 3778^2 + 11575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148253909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3615949 = 148253909 / (1 + 4 + 8 + 2 + 5 + 3 + 9 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148253969) 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, 1807934 + ... + 1808015.

It is an arithmetic number, because the mean of its divisors is an integer number (37967475).

Almost surely, 2^148253909 is an apocalyptic number.

It is an amenable number.

148253909 is a deficient number, since it is larger than the sum of its proper divisors (3615991).

148253909 is an equidigital number, since it uses as much as digits as its factorization.

148253909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615990.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 148253909 is about 12175.9561842181. The cubic root of 148253909 is about 529.2595677042.

The spelling of 148253909 in words is "one hundred forty-eight million, two hundred fifty-three thousand, nine hundred nine".