1320144464 has 20 divisors (see below), whose sum is σ = 2593807200. Its totient is φ = 650774880.

The previous prime is 1320144461. The next prime is 1320144481. The reversal of 1320144464 is 4644410231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320144461) 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 3 ways as a sum of consecutive naturals, for example, 579914 + ... + 582185.

It is an arithmetic number, because the mean of its divisors is an integer number (129690360).

Almost surely, 2^1320144464 is an apocalyptic number.

It is an amenable number.

1320144464 is a deficient number, since it is larger than the sum of its proper divisors (1273662736).

1320144464 is a wasteful number, since it uses less digits than its factorization.

1320144464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162178 (or 1162172 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 1320144464 is about 36333.7923151438. The cubic root of 1320144464 is about 1097.0013270618.

Adding to 1320144464 its reverse (4644410231), we get a palindrome (5964554695).

The spelling of 1320144464 in words is "one billion, three hundred twenty million, one hundred forty-four thousand, four hundred sixty-four".