108191000 has 32 divisors (see below), whose sum is σ = 253169280. Its totient is φ = 43276000.

The previous prime is 108190969. The next prime is 108191029. The reversal of 108191000 is 191801.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53096 + ... + 55095.

It is an arithmetic number, because the mean of its divisors is an integer number (7911540).

Almost surely, 2^108191000 is an apocalyptic number.

108191000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108191000 is an abundant number, since it is smaller than the sum of its proper divisors (144978280).

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

108191000 is a wasteful number, since it uses less digits than its factorization.

108191000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108212 (or 108198 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 108191000 is about 10401.4902778400. The cubic root of 108191000 is about 476.5008850736.

The spelling of 108191000 in words is "one hundred eight million, one hundred ninety-one thousand".