616018816 has 32 divisors (see below), whose sum is σ = 1402544880. Its totient is φ = 264007680.

The previous prime is 616018811. The next prime is 616018829. The reversal of 616018816 is 618810616.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616018811) 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, 342865 + ... + 344656.

Almost surely, 2^616018816 is an apocalyptic number.

It is an amenable number.

616018816 is an abundant number, since it is smaller than the sum of its proper divisors (786526064).

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

616018816 is an equidigital number, since it uses as much as digits as its factorization.

616018816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687542 (or 687530 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 616018816 is about 24819.7263482094. The cubic root of 616018816 is about 850.8728362791.

It can be divided in two parts, 6160 and 18816, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 616018816 in words is "six hundred sixteen million, eighteen thousand, eight hundred sixteen".