109138285 has 16 divisors (see below), whose sum is σ = 134095104. Its totient is φ = 85249152.

The previous prime is 109138279. The next prime is 109138301. The reversal of 109138285 is 582831901.

It is a cyclic number.

It is not a de Polignac number, because 109138285 - 2⁷ = 109138157 is a prime.

It is a super-2 number, since 2×109138285² = 23822330505482450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36144 + ... + 39046.

It is an arithmetic number, because the mean of its divisors is an integer number (8380944).

Almost surely, 2^109138285 is an apocalyptic number.

It is an amenable number.

109138285 is a deficient number, since it is larger than the sum of its proper divisors (24956819).

109138285 is a wasteful number, since it uses less digits than its factorization.

109138285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 109138285 is about 10446.9270601455. The cubic root of 109138285 is about 477.8875411636.

The spelling of 109138285 in words is "one hundred nine million, one hundred thirty-eight thousand, two hundred eighty-five".