138510867 has 8 divisors (see below), whose sum is σ = 201470400. Its totient is φ = 83945960.

The previous prime is 138510829. The next prime is 138510871. The reversal of 138510867 is 768015831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138510867 - 2¹¹ = 138508819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138510877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2098617 + ... + 2098682.

It is an arithmetic number, because the mean of its divisors is an integer number (25183800).

Almost surely, 2^138510867 is an apocalyptic number.

138510867 is a deficient number, since it is larger than the sum of its proper divisors (62959533).

138510867 is a wasteful number, since it uses less digits than its factorization.

138510867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197313.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 138510867 is about 11769.0639814728. The cubic root of 138510867 is about 517.4018166553.

The spelling of 138510867 in words is "one hundred thirty-eight million, five hundred ten thousand, eight hundred sixty-seven".