138063634 has 8 divisors (see below), whose sum is σ = 207339120. Its totient is φ = 68950596.

The previous prime is 138063631. The next prime is 138063643. The reversal of 138063634 is 436360831.

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

It is a self number, because there is not a number n which added to its sum of digits gives 138063634.

It is not an unprimeable number, because it can be changed into a prime (138063631) 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 3 ways as a sum of consecutive naturals, for example, 38464 + ... + 41899.

It is an arithmetic number, because the mean of its divisors is an integer number (25917390).

Almost surely, 2^138063634 is an apocalyptic number.

138063634 is a deficient number, since it is larger than the sum of its proper divisors (69275486).

138063634 is an equidigital number, since it uses as much as digits as its factorization.

138063634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81224.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 138063634 is about 11750.0482552201. The cubic root of 138063634 is about 516.8443425459.

The spelling of 138063634 in words is "one hundred thirty-eight million, sixty-three thousand, six hundred thirty-four".