138108267 has 16 divisors (see below), whose sum is σ = 223205760. Its totient is φ = 83701800.

The previous prime is 138108263. The next prime is 138108293. The reversal of 138108267 is 762801831.

It is not a de Polignac number, because 138108267 - 2² = 138108263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138108263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232209 + ... + 232802.

It is an arithmetic number, because the mean of its divisors is an integer number (13950360).

Almost surely, 2^138108267 is an apocalyptic number.

138108267 is a deficient number, since it is larger than the sum of its proper divisors (85097493).

138108267 is a wasteful number, since it uses less digits than its factorization.

138108267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465031 (or 465025 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 138108267 is about 11751.9473705425. The cubic root of 138108267 is about 516.9000314276.

The spelling of 138108267 in words is "one hundred thirty-eight million, one hundred eight thousand, two hundred sixty-seven".