1244546660 has 48 divisors (see below), whose sum is σ = 3010473984. Its totient is φ = 423335808.

The previous prime is 1244546657. The next prime is 1244546663. The reversal of 1244546660 is 666454421.

It is an interprime number because it is at equal distance from previous prime (1244546657) and next prime (1244546663).

It is not an unprimeable number, because it can be changed into a prime (1244546663) 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 15 ways as a sum of consecutive naturals, for example, 17219 + ... + 52778.

It is an arithmetic number, because the mean of its divisors is an integer number (62718208).

Almost surely, 2^1244546660 is an apocalyptic number.

1244546660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244546660 is an abundant number, since it is smaller than the sum of its proper divisors (1765927324).

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

1244546660 is a wasteful number, since it uses less digits than its factorization.

1244546660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70140 (or 70138 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 1244546660 is about 35278.1328871016. The cubic root of 1244546660 is about 1075.6485460980.

The spelling of 1244546660 in words is "one billion, two hundred forty-four million, five hundred forty-six thousand, six hundred sixty".