108897189 has 32 divisors (see below), whose sum is σ = 165836160. Its totient is φ = 63129600.

The previous prime is 108897181. The next prime is 108897197. The reversal of 108897189 is 981798801.

It is an interprime number because it is at equal distance from previous prime (108897181) and next prime (108897197).

It is not a de Polignac number, because 108897189 - 2³ = 108897181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108897181) 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, 38359 + ... + 41099.

It is an arithmetic number, because the mean of its divisors is an integer number (5182380).

Almost surely, 2^108897189 is an apocalyptic number.

108897189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

108897189 is a deficient number, since it is larger than the sum of its proper divisors (56938971).

108897189 is a wasteful number, since it uses less digits than its factorization.

108897189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 290304, while the sum is 51.

The square root of 108897189 is about 10435.3815934062. The cubic root of 108897189 is about 477.5353832866.

The spelling of 108897189 in words is "one hundred eight million, eight hundred ninety-seven thousand, one hundred eighty-nine".