1244880064 has 28 divisors (see below), whose sum is σ = 2472373008. Its totient is φ = 621920000.

The previous prime is 1244880061. The next prime is 1244880067. The reversal of 1244880064 is 4600884421.

It is an interprime number because it is at equal distance from previous prime (1244880061) and next prime (1244880067).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1244880061) 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, 75789 + ... + 90739.

It is an arithmetic number, because the mean of its divisors is an integer number (88299036).

Almost surely, 2^1244880064 is an apocalyptic number.

It is an amenable number.

1244880064 is a deficient number, since it is larger than the sum of its proper divisors (1227492944).

1244880064 is a wasteful number, since it uses less digits than its factorization.

1244880064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16264 (or 16254 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 1244880064 is about 35282.8579341300. The cubic root of 1244880064 is about 1075.7445900417.

The spelling of 1244880064 in words is "one billion, two hundred forty-four million, eight hundred eighty thousand, sixty-four".