109146618 has 72 divisors (see below), whose sum is σ = 279351072. Its totient is φ = 30702672.

The previous prime is 109146601. The next prime is 109146619. The reversal of 109146618 is 816641901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (109146619) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58171 + ... + 60017.

It is an arithmetic number, because the mean of its divisors is an integer number (3879876).

Almost surely, 2^109146618 is an apocalyptic number.

109146618 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 109146618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139675536).

109146618 is an abundant number, since it is smaller than the sum of its proper divisors (170204454).

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

109146618 is a wasteful number, since it uses less digits than its factorization.

109146618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 109146618 is about 10447.3258779460. The cubic root of 109146618 is about 477.8997035180.

The spelling of 109146618 in words is "one hundred nine million, one hundred forty-six thousand, six hundred eighteen".