1616928864 has 48 divisors (see below), whose sum is σ = 4261018608. Its totient is φ = 536870912.

The previous prime is 1616928857. The next prime is 1616928883. The reversal of 1616928864 is 4688296161.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1616928864² = 5228917902472660992, which contains 22 as substring.

1616928864 is an undulating number in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

In principle, a polygon with 1616928864 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8097 + ... + 57440.

It is an arithmetic number, because the mean of its divisors is an integer number (88771221).

Almost surely, 2^1616928864 is an apocalyptic number.

It is an amenable number.

1616928864 is an abundant number, since it is smaller than the sum of its proper divisors (2644089744).

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

1616928864 is a wasteful number, since it uses less digits than its factorization.

1616928864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65807 (or 65799 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 1616928864 is about 40211.0540025998. The cubic root of 1616928864 is about 1173.7176567578.

The spelling of 1616928864 in words is "one billion, six hundred sixteen million, nine hundred twenty-eight thousand, eight hundred sixty-four".