1244517868 has 24 divisors (see below), whose sum is σ = 2431154880. Its totient is φ = 552533520.

The previous prime is 1244517863. The next prime is 1244517871. The reversal of 1244517868 is 8687154421.

It is not an unprimeable number, because it can be changed into a prime (1244517863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326998 + ... + 330781.

It is an arithmetic number, because the mean of its divisors is an integer number (101298120).

Almost surely, 2^1244517868 is an apocalyptic number.

It is an amenable number.

1244517868 is a deficient number, since it is larger than the sum of its proper divisors (1186637012).

1244517868 is a wasteful number, since it uses less digits than its factorization.

1244517868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657837 (or 657835 counting only the distinct ones).

The product of its digits is 430080, while the sum is 46.

The square root of 1244517868 is about 35277.7248132586. The cubic root of 1244517868 is about 1075.6402511601.

The spelling of 1244517868 in words is "one billion, two hundred forty-four million, five hundred seventeen thousand, eight hundred sixty-eight".