618628311 has 24 divisors (see below), whose sum is σ = 1030783104. Its totient is φ = 350194320.

The previous prime is 618628289. The next prime is 618628313. The reversal of 618628311 is 113826816.

618628311 is a `hidden beast` number, since 6 + 18 + 628 + 3 + 11 = 666.

It is not a de Polignac number, because 618628311 - 2⁵ = 618628279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618628313) 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 23 ways as a sum of consecutive naturals, for example, 39145 + ... + 52626.

It is an arithmetic number, because the mean of its divisors is an integer number (42949296).

Almost surely, 2^618628311 is an apocalyptic number.

618628311 is a deficient number, since it is larger than the sum of its proper divisors (412154793).

618628311 is a wasteful number, since it uses less digits than its factorization.

618628311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91891 (or 91888 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 618628311 is about 24872.2397664545. The cubic root of 618628311 is about 852.0725943236.

The spelling of 618628311 in words is "six hundred eighteen million, six hundred twenty-eight thousand, three hundred eleven".