1336444648 has 128 divisors (see below), whose sum is σ = 3328128000. Its totient is φ = 487365120.

The previous prime is 1336444643. The next prime is 1336444649. The reversal of 1336444648 is 8464446331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1336444643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1041015 + ... + 1042297.

It is an arithmetic number, because the mean of its divisors is an integer number (26001000).

Almost surely, 2^1336444648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1336444648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1664064000).

1336444648 is an abundant number, since it is smaller than the sum of its proper divisors (1991683352).

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

1336444648 is a wasteful number, since it uses less digits than its factorization.

1336444648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1411 counting only the distinct ones).

The product of its digits is 663552, while the sum is 43.

The square root of 1336444648 is about 36557.4157730001. The cubic root of 1336444648 is about 1101.4978624754.

The spelling of 1336444648 in words is "one billion, three hundred thirty-six million, four hundred forty-four thousand, six hundred forty-eight".