618895556 has 6 divisors (see below), whose sum is σ = 1083067230. Its totient is φ = 309447776.

The previous prime is 618895553. The next prime is 618895561. The reversal of 618895556 is 655598816.

It can be written as a sum of positive squares in only one way, i.e., 618317956 + 577600 = 24866^2 + 760^2 .

It is a junction number, because it is equal to n+sod(n) for n = 618895498 and 618895507.

It is not an unprimeable number, because it can be changed into a prime (618895553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77361941 + ... + 77361948.

It is an arithmetic number, because the mean of its divisors is an integer number (180511205).

Almost surely, 2^618895556 is an apocalyptic number.

It is an amenable number.

618895556 is a deficient number, since it is larger than the sum of its proper divisors (464171674).

618895556 is a wasteful number, since it uses less digits than its factorization.

618895556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154723893 (or 154723891 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 53.

The square root of 618895556 is about 24877.6115413036. The cubic root of 618895556 is about 852.1952739974.

The spelling of 618895556 in words is "six hundred eighteen million, eight hundred ninety-five thousand, five hundred fifty-six".