138541748 has 6 divisors (see below), whose sum is σ = 242448066. Its totient is φ = 69270872.

The previous prime is 138541723. The next prime is 138541751. The reversal of 138541748 is 847145831.

It can be written as a sum of positive squares in only one way, i.e., 80964004 + 57577744 = 8998^2 + 7588^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17317715 + ... + 17317722.

It is an arithmetic number, because the mean of its divisors is an integer number (40408011).

Almost surely, 2^138541748 is an apocalyptic number.

It is an amenable number.

138541748 is a deficient number, since it is larger than the sum of its proper divisors (103906318).

138541748 is a wasteful number, since it uses less digits than its factorization.

138541748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34635441 (or 34635439 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 138541748 is about 11770.3758648567. The cubic root of 138541748 is about 517.4402653791.

The spelling of 138541748 in words is "one hundred thirty-eight million, five hundred forty-one thousand, seven hundred forty-eight".