109210138 has 16 divisors (see below), whose sum is σ = 173010240. Its totient is φ = 51559200.

The previous prime is 109210133. The next prime is 109210217. The reversal of 109210138 is 831012901.

It is not an unprimeable number, because it can be changed into a prime (109210133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7198 + ... + 16438.

It is an arithmetic number, because the mean of its divisors is an integer number (10813140).

Almost surely, 2^109210138 is an apocalyptic number.

109210138 is a deficient number, since it is larger than the sum of its proper divisors (63800102).

109210138 is a wasteful number, since it uses less digits than its factorization.

109210138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9573.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 109210138 is about 10450.3654481554. The cubic root of 109210138 is about 477.9923932194.

The spelling of 109210138 in words is "one hundred nine million, two hundred ten thousand, one hundred thirty-eight".