138214766 has 8 divisors (see below), whose sum is σ = 209946720. Its totient is φ = 68232528.

The previous prime is 138214729. The next prime is 138214781. The reversal of 138214766 is 667412831.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437231 + ... + 437546.

It is an arithmetic number, because the mean of its divisors is an integer number (26243340).

Almost surely, 2^138214766 is an apocalyptic number.

138214766 is a deficient number, since it is larger than the sum of its proper divisors (71731954).

138214766 is an equidigital number, since it uses as much as digits as its factorization.

138214766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874858.

The product of its digits is 48384, while the sum is 38.

The square root of 138214766 is about 11756.4776187428. The cubic root of 138214766 is about 517.0328624634.

The spelling of 138214766 in words is "one hundred thirty-eight million, two hundred fourteen thousand, seven hundred sixty-six".