108519138 has 96 divisors (see below), whose sum is σ = 292795776. Its totient is φ = 28283904.

The previous prime is 108519137. The next prime is 108519179. The reversal of 108519138 is 831915801.

108519138 is a `hidden beast` number, since 1 + 0 + 8 + 519 + 138 = 666.

It is not an unprimeable number, because it can be changed into a prime (108519137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158545 + ... + 159227.

It is an arithmetic number, because the mean of its divisors is an integer number (3049956).

Almost surely, 2^108519138 is an apocalyptic number.

108519138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 108519138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146397888).

108519138 is an abundant number, since it is smaller than the sum of its proper divisors (184276638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108519138 is a wasteful number, since it uses less digits than its factorization.

108519138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 108519138 is about 10417.2519408911. The cubic root of 108519138 is about 476.9821334763.

The spelling of 108519138 in words is "one hundred eight million, five hundred nineteen thousand, one hundred thirty-eight".