138516814 has 8 divisors (see below), whose sum is σ = 209019888. Its totient is φ = 68843520.

The previous prime is 138516809. The next prime is 138516817. The reversal of 138516814 is 418615831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138516817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207027 + ... + 207694.

It is an arithmetic number, because the mean of its divisors is an integer number (26127486).

Almost surely, 2^138516814 is an apocalyptic number.

138516814 is a deficient number, since it is larger than the sum of its proper divisors (70503074).

138516814 is a wasteful number, since it uses less digits than its factorization.

138516814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414890.

The product of its digits is 23040, while the sum is 37.

The square root of 138516814 is about 11769.3166326682. The cubic root of 138516814 is about 517.4092214763.

The spelling of 138516814 in words is "one hundred thirty-eight million, five hundred sixteen thousand, eight hundred fourteen".