108018781 has 12 divisors (see below), whose sum is σ = 122778012. Its totient is φ = 94457664.

The previous prime is 108018767. The next prime is 108018791. The reversal of 108018781 is 187810801.

It can be written as a sum of positive squares in 2 ways, for example, as 34916281 + 73102500 = 5909^2 + 8550^2 .

It is not a de Polignac number, because 108018781 - 2⁵ = 108018749 is a prime.

It is a super-2 number, since 2×108018781² = 23336114097451922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108018721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6816 + ... + 16201.

It is an arithmetic number, because the mean of its divisors is an integer number (10231501).

Almost surely, 2^108018781 is an apocalyptic number.

It is an amenable number.

108018781 is a deficient number, since it is larger than the sum of its proper divisors (14759231).

108018781 is a wasteful number, since it uses less digits than its factorization.

108018781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23068 (or 23049 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 34.

The square root of 108018781 is about 10393.2084074168. The cubic root of 108018781 is about 476.2479186008.

The spelling of 108018781 in words is "one hundred eight million, eighteen thousand, seven hundred eighty-one".