148818449 has 4 divisors (see below), whose sum is σ = 160266036. Its totient is φ = 137370864.

The previous prime is 148818433. The next prime is 148818451. The reversal of 148818449 is 944818841.

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 68178049 + 80640400 = 8257^2 + 8980^2 .

It is a cyclic number.

It is not a de Polignac number, because 148818449 - 2⁴ = 148818433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148818409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5723774 + ... + 5723799.

It is an arithmetic number, because the mean of its divisors is an integer number (40066509).

Almost surely, 2^148818449 is an apocalyptic number.

It is an amenable number.

148818449 is a deficient number, since it is larger than the sum of its proper divisors (11447587).

148818449 is a wasteful number, since it uses less digits than its factorization.

148818449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11447586.

The product of its digits is 294912, while the sum is 47.

The square root of 148818449 is about 12199.1167303211. The cubic root of 148818449 is about 529.9305106474.

The spelling of 148818449 in words is "one hundred forty-eight million, eight hundred eighteen thousand, four hundred forty-nine".