1244644968 has 64 divisors (see below), whose sum is σ = 3678768000. Its totient is φ = 343348992.

The previous prime is 1244644967. The next prime is 1244644979. The reversal of 1244644968 is 8694464421.

It is not an unprimeable number, because it can be changed into a prime (1244644967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122863 + ... + 132606.

It is an arithmetic number, because the mean of its divisors is an integer number (57480750).

Almost surely, 2^1244644968 is an apocalyptic number.

It is an amenable number.

1244644968 is an abundant number, since it is smaller than the sum of its proper divisors (2434123032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1244644968 is a wasteful number, since it uses less digits than its factorization.

1244644968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255514 (or 255510 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 48.

The square root of 1244644968 is about 35279.5261872945. The cubic root of 1244644968 is about 1075.6768675413.

The spelling of 1244644968 in words is "one billion, two hundred forty-four million, six hundred forty-four thousand, nine hundred sixty-eight".