1616044416 has 64 divisors (see below), whose sum is σ = 4905857280. Its totient is φ = 461726208.

The previous prime is 1616044403. The next prime is 1616044421. The reversal of 1616044416 is 6144406161.

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

It is a super-2 number, since 2×1616044416² = 5223199108969562112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297916 + ... + 303291.

It is an arithmetic number, because the mean of its divisors is an integer number (76654020).

Almost surely, 2^1616044416 is an apocalyptic number.

1616044416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1616044416 is an abundant number, since it is smaller than the sum of its proper divisors (3289812864).

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

1616044416 is an equidigital number, since it uses as much as digits as its factorization.

1616044416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601231 (or 601219 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1616044416 is about 40200.0549253356. The cubic root of 1616044416 is about 1173.5036127986.

The spelling of 1616044416 in words is "one billion, six hundred sixteen million, forty-four thousand, four hundred sixteen".