138458716 has 36 divisors (see below), whose sum is σ = 268717176. Its totient is φ = 61908000.

The previous prime is 138458711. The next prime is 138458729. The reversal of 138458716 is 617854831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138458711) 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 11 ways as a sum of consecutive naturals, for example, 197166 + ... + 197866.

It is an arithmetic number, because the mean of its divisors is an integer number (7464366).

Almost surely, 2^138458716 is an apocalyptic number.

It is an amenable number.

138458716 is a deficient number, since it is larger than the sum of its proper divisors (130258460).

138458716 is a wasteful number, since it uses less digits than its factorization.

138458716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 781 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 138458716 is about 11766.8481761260. The cubic root of 138458716 is about 517.3368725107.

It can be divided in two parts, 138 and 458716, that added together give a palindrome (458854).

The spelling of 138458716 in words is "one hundred thirty-eight million, four hundred fifty-eight thousand, seven hundred sixteen".