138048637 has 8 divisors (see below), whose sum is σ = 140814720. Its totient is φ = 135305520.

The previous prime is 138048607. The next prime is 138048641. The reversal of 138048637 is 736840831.

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

It is a cyclic number.

It is not a de Polignac number, because 138048637 - 2²⁷ = 3830909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138048637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138048607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6664 + ... + 17902.

It is an arithmetic number, because the mean of its divisors is an integer number (17601840).

Almost surely, 2^138048637 is an apocalyptic number.

It is an amenable number.

138048637 is a deficient number, since it is larger than the sum of its proper divisors (2766083).

138048637 is a wasteful number, since it uses less digits than its factorization.

138048637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11483.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 138048637 is about 11749.4100702971. The cubic root of 138048637 is about 516.8256279984.

The spelling of 138048637 in words is "one hundred thirty-eight million, forty-eight thousand, six hundred thirty-seven".