618227811 has 6 divisors (see below), whose sum is σ = 892995740. Its totient is φ = 412151868.

The previous prime is 618227791. The next prime is 618227839. The reversal of 618227811 is 118722816.

618227811 is a `hidden beast` number, since 618 + 2 + 27 + 8 + 11 = 666.

It is not a de Polignac number, because 618227811 - 2⁶ = 618227747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618227861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34345981 + ... + 34345998.

Almost surely, 2^618227811 is an apocalyptic number.

618227811 is a deficient number, since it is larger than the sum of its proper divisors (274767929).

618227811 is a wasteful number, since it uses less digits than its factorization.

618227811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68691985 (or 68691982 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 618227811 is about 24864.1873183098. The cubic root of 618227811 is about 851.8886773483. Note that the first 3 decimals are identical.

The spelling of 618227811 in words is "six hundred eighteen million, two hundred twenty-seven thousand, eight hundred eleven".