4518248149 has 4 divisors (see below), whose sum is σ = 4518458860. Its totient is φ = 4518037440.

The previous prime is 4518248099. The next prime is 4518248183. The reversal of 4518248149 is 9418428154.

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 575664049 + 3942584100 = 23993^2 + 62790^2 .

It is a cyclic number.

It is not a de Polignac number, because 4518248149 - 2¹⁷ = 4518117077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4518248099 and 4518248108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4518242149) 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, 69012 + ... + 117469.

It is an arithmetic number, because the mean of its divisors is an integer number (1129614715).

Almost surely, 2^4518248149 is an apocalyptic number.

It is an amenable number.

4518248149 is a deficient number, since it is larger than the sum of its proper divisors (210711).

4518248149 is a wasteful number, since it uses less digits than its factorization.

4518248149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210710.

The product of its digits is 368640, while the sum is 46.

The square root of 4518248149 is about 67217.9153871942. The cubic root of 4518248149 is about 1653.1922465627.

The spelling of 4518248149 in words is "four billion, five hundred eighteen million, two hundred forty-eight thousand, one hundred forty-nine".