618242328891 has 16 divisors (see below), whose sum is σ = 999179521920. Its totient is φ = 374692320360.

The previous prime is 618242328863. The next prime is 618242328901. The reversal of 618242328891 is 198823242816.

618242328891 is a `hidden beast` number, since 61 + 82 + 423 + 2 + 8 + 89 + 1 = 666.

It is not a de Polignac number, because 618242328891 - 2²³ = 618233940283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618242324891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040811705 + ... + 1040812298.

It is an arithmetic number, because the mean of its divisors is an integer number (62448720120).

Almost surely, 2^618242328891 is an apocalyptic number.

618242328891 is a deficient number, since it is larger than the sum of its proper divisors (380937193029).

618242328891 is a wasteful number, since it uses less digits than its factorization.

618242328891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081624023 (or 2081624017 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 618242328891 in words is "six hundred eighteen billion, two hundred forty-two million, three hundred twenty-eight thousand, eight hundred ninety-one".