138333867 has 8 divisors (see below), whose sum is σ = 210794496. Its totient is φ = 79047912.

The previous prime is 138333827. The next prime is 138333883. The reversal of 138333867 is 768333831.

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

It is not a de Polignac number, because 138333867 - 2⁶ = 138333803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138333817) 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, 3293643 + ... + 3293684.

It is an arithmetic number, because the mean of its divisors is an integer number (26349312).

Almost surely, 2^138333867 is an apocalyptic number.

138333867 is a deficient number, since it is larger than the sum of its proper divisors (72460629).

138333867 is an equidigital number, since it uses as much as digits as its factorization.

138333867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587337.

The product of its digits is 217728, while the sum is 42.

The square root of 138333867 is about 11761.5418632082. The cubic root of 138333867 is about 517.1813305647.

The spelling of 138333867 in words is "one hundred thirty-eight million, three hundred thirty-three thousand, eight hundred sixty-seven".