138650682 has 32 divisors (see below), whose sum is σ = 291588480. Its totient is φ = 43888320.

The previous prime is 138650651. The next prime is 138650683. The reversal of 138650682 is 286056831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 138650682.

It is not an unprimeable number, because it can be changed into a prime (138650683) 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 15 ways as a sum of consecutive naturals, for example, 4083 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (9112140).

Almost surely, 2^138650682 is an apocalyptic number.

138650682 is an abundant number, since it is smaller than the sum of its proper divisors (152937798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138650682 is a wasteful number, since it uses less digits than its factorization.

138650682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13158.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 138650682 is about 11775.0024203819. The cubic root of 138650682 is about 517.5758492291.

The spelling of 138650682 in words is "one hundred thirty-eight million, six hundred fifty thousand, six hundred eighty-two".