1616360320 has 64 divisors (see below), whose sum is σ = 3872564640. Its totient is φ = 645130240.

The previous prime is 1616360311. The next prime is 1616360321. The reversal of 1616360320 is 230636161.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1616360320² = 5225241368141004800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616360321) 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 7 ways as a sum of consecutive naturals, for example, 319410 + ... + 324430.

Almost surely, 2^1616360320 is an apocalyptic number.

1616360320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616360320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1936282320).

1616360320 is an abundant number, since it is smaller than the sum of its proper divisors (2256204320).

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

1616360320 is an equidigital number, since it uses as much as digits as its factorization.

1616360320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1616360320 is about 40203.9838821975. The cubic root of 1616360320 is about 1173.5800732243.

Adding to 1616360320 its reverse (230636161), we get a palindrome (1846996481).

The spelling of 1616360320 in words is "one billion, six hundred sixteen million, three hundred sixty thousand, three hundred twenty".