109145868 has 96 divisors (see below), whose sum is σ = 286868736. Its totient is φ = 32078592.

The previous prime is 109145867. The next prime is 109145923. The reversal of 109145868 is 868541901.

It is not an unprimeable number, because it can be changed into a prime (109145867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355371 + ... + 355677.

It is an arithmetic number, because the mean of its divisors is an integer number (2988216).

Almost surely, 2^109145868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109145868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143434368).

109145868 is an abundant number, since it is smaller than the sum of its proper divisors (177722868).

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

109145868 is a wasteful number, since it uses less digits than its factorization.

109145868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 109145868 is about 10447.2899835316. The cubic root of 109145868 is about 477.8986088877.

The spelling of 109145868 in words is "one hundred nine million, one hundred forty-five thousand, eight hundred sixty-eight".