108918961 has 8 divisors (see below), whose sum is σ = 113800320. Its totient is φ = 104049792.

The previous prime is 108918947. The next prime is 108918967. The reversal of 108918961 is 169819801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 108918961 - 2⁹ = 108918449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108918967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18561 + ... + 23713.

It is an arithmetic number, because the mean of its divisors is an integer number (14225040).

Almost surely, 2^108918961 is an apocalyptic number.

It is an amenable number.

108918961 is a deficient number, since it is larger than the sum of its proper divisors (4881359).

108918961 is an equidigital number, since it uses as much as digits as its factorization.

108918961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6095.

The product of its (nonzero) digits is 31104, while the sum is 43.

The square root of 108918961 is about 10436.4247230553. The cubic root of 108918961 is about 477.5672059861.

The spelling of 108918961 in words is "one hundred eight million, nine hundred eighteen thousand, nine hundred sixty-one".