108109978 has 8 divisors (see below), whose sum is σ = 162617760. Its totient is φ = 53904060.

The previous prime is 108109957. The next prime is 108109979. The reversal of 108109978 is 879901801.

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

It is not an unprimeable number, because it can be changed into a prime (108109979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74568 + ... + 76003.

It is an arithmetic number, because the mean of its divisors is an integer number (20327220).

Almost surely, 2^108109978 is an apocalyptic number.

108109978 is a deficient number, since it is larger than the sum of its proper divisors (54507782).

108109978 is a wasteful number, since it uses less digits than its factorization.

108109978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150932.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 108109978 is about 10397.5948180336. The cubic root of 108109978 is about 476.3819081530.

The spelling of 108109978 in words is "one hundred eight million, one hundred nine thousand, nine hundred seventy-eight".