138482649 has 8 divisors (see below), whose sum is σ = 205159520. Its totient is φ = 92321748.

The previous prime is 138482639. The next prime is 138482653. The reversal of 138482649 is 946284831.

It is a happy number.

138482649 is a `hidden beast` number, since 1 + 384 + 8 + 264 + 9 = 666.

It is not a de Polignac number, because 138482649 - 2¹⁹ = 137958361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138482639) 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 7 ways as a sum of consecutive naturals, for example, 2564467 + ... + 2564520.

It is an arithmetic number, because the mean of its divisors is an integer number (25644940).

Almost surely, 2^138482649 is an apocalyptic number.

It is an amenable number.

138482649 is a deficient number, since it is larger than the sum of its proper divisors (66676871).

138482649 is an equidigital number, since it uses as much as digits as its factorization.

138482649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128996 (or 5128990 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 138482649 is about 11767.8650994987. The cubic root of 138482649 is about 517.3666785313.

The spelling of 138482649 in words is "one hundred thirty-eight million, four hundred eighty-two thousand, six hundred forty-nine".