618556316 has 12 divisors (see below), whose sum is σ = 1237112688. Its totient is φ = 265095552.

The previous prime is 618556313. The next prime is 618556327. The reversal of 618556316 is 613655816.

618556316 is an admirable number.

It is a super-2 number, since 2×618556316² = 765223832126983712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618556313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11045621 + ... + 11045676.

It is an arithmetic number, because the mean of its divisors is an integer number (103092724).

Almost surely, 2^618556316 is an apocalyptic number.

It is an amenable number.

618556316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

618556316 is a wasteful number, since it uses less digits than its factorization.

618556316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22091308 (or 22091306 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 618556316 is about 24870.7924280671. The cubic root of 618556316 is about 852.0395387471.

The spelling of 618556316 in words is "six hundred eighteen million, five hundred fifty-six thousand, three hundred sixteen".