618268618 has 12 divisors (see below), whose sum is σ = 1019377170. Its totient is φ = 281031080.

The previous prime is 618268579. The next prime is 618268633. The reversal of 618268618 is 816862816.

It can be written as a sum of positive squares in only one way, i.e., 322669369 + 295599249 = 17963^2 + 17193^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1277173 + ... + 1277656.

Almost surely, 2^618268618 is an apocalyptic number.

618268618 is a deficient number, since it is larger than the sum of its proper divisors (401108552).

618268618 is a wasteful number, since it uses less digits than its factorization.

618268618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554853 (or 2554842 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 618268618 is about 24865.0079026732. The cubic root of 618268618 is about 851.9074203078.

The spelling of 618268618 in words is "six hundred eighteen million, two hundred sixty-eight thousand, six hundred eighteen".