138036349 has 16 divisors (see below), whose sum is σ = 158906880. Its totient is φ = 118586160.

The previous prime is 138036347. The next prime is 138036359. The reversal of 138036349 is 943630831.

It is not a de Polignac number, because 138036349 - 2¹ = 138036347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138036343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142264 + ... + 143230.

It is an arithmetic number, because the mean of its divisors is an integer number (9931680).

Almost surely, 2^138036349 is an apocalyptic number.

138036349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

138036349 is a deficient number, since it is larger than the sum of its proper divisors (20870531).

138036349 is a wasteful number, since it uses less digits than its factorization.

138036349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 138036349 is about 11748.8871387889. The cubic root of 138036349 is about 516.8102929641.

The spelling of 138036349 in words is "one hundred thirty-eight million, thirty-six thousand, three hundred forty-nine".