138323667 has 8 divisors (see below), whose sum is σ = 194138560. Its totient is φ = 87362280.

The previous prime is 138323663. The next prime is 138323683. The reversal of 138323667 is 766323831.

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

It is not a de Polignac number, because 138323667 - 2² = 138323663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138323663) 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, 1213309 + ... + 1213422.

It is an arithmetic number, because the mean of its divisors is an integer number (24267320).

Almost surely, 2^138323667 is an apocalyptic number.

138323667 is a deficient number, since it is larger than the sum of its proper divisors (55814893).

138323667 is a wasteful number, since it uses less digits than its factorization.

138323667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426753.

The product of its digits is 108864, while the sum is 39.

The square root of 138323667 is about 11761.1082385972. The cubic root of 138323667 is about 517.1686188566.

The spelling of 138323667 in words is "one hundred thirty-eight million, three hundred twenty-three thousand, six hundred sixty-seven".