138327637 has 12 divisors (see below), whose sum is σ = 161112780. Its totient is φ = 118418496.

The previous prime is 138327617. The next prime is 138327641. The reversal of 138327637 is 736723831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110544196 + 27783441 = 10514^2 + 5271^2 .

It is a de Polignac number, because none of the positive numbers 2^k-138327637 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 138327637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138327617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59073 + ... + 61369.

It is an arithmetic number, because the mean of its divisors is an integer number (13426065).

Almost surely, 2^138327637 is an apocalyptic number.

It is an amenable number.

138327637 is a deficient number, since it is larger than the sum of its proper divisors (22785143).

138327637 is a wasteful number, since it uses less digits than its factorization.

138327637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540 (or 3533 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 138327637 is about 11761.2770139981. The cubic root of 138327637 is about 517.1735665271.

The spelling of 138327637 in words is "one hundred thirty-eight million, three hundred twenty-seven thousand, six hundred thirty-seven".