1616044064 has 24 divisors (see below), whose sum is σ = 3226402368. Its totient is φ = 796640320.

The previous prime is 1616044063. The next prime is 1616044081. The reversal of 1616044064 is 4604406161.

It is a super-2 number, since 2×1616044064² = 5223196833579272192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1616044064.

It is not an unprimeable number, because it can be changed into a prime (1616044061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353372 + ... + 357915.

It is an arithmetic number, because the mean of its divisors is an integer number (134433432).

Almost surely, 2^1616044064 is an apocalyptic number.

It is an amenable number.

1616044064 is a deficient number, since it is larger than the sum of its proper divisors (1610358304).

1616044064 is an equidigital number, since it uses as much as digits as its factorization.

1616044064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711368 (or 711360 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1616044064 is about 40200.0505472319. The cubic root of 1616044064 is about 1173.5035275960.

The spelling of 1616044064 in words is "one billion, six hundred sixteen million, forty-four thousand, sixty-four".