109305918 has 48 divisors (see below), whose sum is σ = 249224976. Its totient is φ = 34577280.

The previous prime is 109305883. The next prime is 109305919. The reversal of 109305918 is 819503901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109305919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25305 + ... + 29307.

It is an arithmetic number, because the mean of its divisors is an integer number (5192187).

Almost surely, 2^109305918 is an apocalyptic number.

109305918 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 109305918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124612488).

109305918 is an abundant number, since it is smaller than the sum of its proper divisors (139919058).

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

109305918 is a wasteful number, since it uses less digits than its factorization.

109305918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089 (or 4086 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 109305918 is about 10454.9470586895. The cubic root of 109305918 is about 478.1320894502.

The spelling of 109305918 in words is "one hundred nine million, three hundred five thousand, nine hundred eighteen".