109206018 has 24 divisors (see below), whose sum is σ = 243009468. Its totient is φ = 35417952.

The previous prime is 109206007. The next prime is 109206037. The reversal of 109206018 is 810602901.

It can be written as a sum of positive squares in 2 ways, for example, as 109056249 + 149769 = 10443^2 + 387^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109205982 and 109206000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81321 + ... + 82652.

Almost surely, 2^109206018 is an apocalyptic number.

109206018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109206018 is an abundant number, since it is smaller than the sum of its proper divisors (133803450).

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

109206018 is a wasteful number, since it uses less digits than its factorization.

109206018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164018 (or 164015 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 109206018 is about 10450.1683240032. The cubic root of 109206018 is about 477.9863823201.

Adding to 109206018 its reverse (810602901), we get a palindrome (919808919).

The spelling of 109206018 in words is "one hundred nine million, two hundred six thousand, eighteen".