109187668 has 36 divisors (see below), whose sum is σ = 210043260. Its totient is φ = 49595392.

The previous prime is 109187653. The next prime is 109187671. The reversal of 109187668 is 866781901.

109187668 = 1077² + 1078² + ... + 1163².

It can be written as a sum of positive squares in 6 ways, for example, as 25684624 + 83503044 = 5068^2 + 9138^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31896 + ... + 35152.

It is an arithmetic number, because the mean of its divisors is an integer number (5834535).

Almost surely, 2^109187668 is an apocalyptic number.

It is an amenable number.

109187668 is a deficient number, since it is larger than the sum of its proper divisors (100855592).

109187668 is a wasteful number, since it uses less digits than its factorization.

109187668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324 (or 3305 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 109187668 is about 10449.2903108297. The cubic root of 109187668 is about 477.9596086386.

The spelling of 109187668 in words is "one hundred nine million, one hundred eighty-seven thousand, six hundred sixty-eight".