1320164560 has 80 divisors (see below), whose sum is σ = 3606019200. Its totient is φ = 443128320.

The previous prime is 1320164537. The next prime is 1320164561. The reversal of 1320164560 is 654610231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320164561) 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, 46260 + ... + 69139.

It is an arithmetic number, because the mean of its divisors is an integer number (45075240).

Almost surely, 2^1320164560 is an apocalyptic number.

1320164560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320164560 is an abundant number, since it is smaller than the sum of its proper divisors (2285854640).

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

1320164560 is a wasteful number, since it uses less digits than its factorization.

1320164560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115436 (or 115430 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1320164560 is about 36334.0688610566. The cubic root of 1320164560 is about 1097.0068934290.

Adding to 1320164560 its reverse (654610231), we get a palindrome (1974774791).

The spelling of 1320164560 in words is "one billion, three hundred twenty million, one hundred sixty-four thousand, five hundred sixty".