8918138877 has 16 divisors (see below), whose sum is σ = 11934485568. Its totient is φ = 5923648640.

The previous prime is 8918138861. The next prime is 8918138941. The reversal of 8918138877 is 7788318198.

It is a happy number.

8918138877 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8918138877 - 2⁴ = 8918138861 is a prime.

It is a super-2 number, since 2×8918138877² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8918138877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8918138077) 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, 1022977 + ... + 1031657.

It is an arithmetic number, because the mean of its divisors is an integer number (745905348).

Almost surely, 2^8918138877 is an apocalyptic number.

It is an amenable number.

8918138877 is a deficient number, since it is larger than the sum of its proper divisors (3016346691).

8918138877 is a wasteful number, since it uses less digits than its factorization.

8918138877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9900.

The product of its digits is 5419008, while the sum is 60.

The square root of 8918138877 is about 94435.8982431999. The cubic root of 8918138877 is about 2073.7580124176.

The spelling of 8918138877 in words is "eight billion, nine hundred eighteen million, one hundred thirty-eight thousand, eight hundred seventy-seven".