138662548 has 6 divisors (see below), whose sum is σ = 242659466. Its totient is φ = 69331272.

The previous prime is 138662527. The next prime is 138662609. The reversal of 138662548 is 845266831.

It can be written as a sum of positive squares in only one way, i.e., 135210384 + 3452164 = 11628^2 + 1858^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17332815 + ... + 17332822.

Almost surely, 2^138662548 is an apocalyptic number.

It is an amenable number.

138662548 is a deficient number, since it is larger than the sum of its proper divisors (103996918).

138662548 is a wasteful number, since it uses less digits than its factorization.

138662548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34665641 (or 34665639 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 138662548 is about 11775.5062736173. The cubic root of 138662548 is about 517.5906138634.

It can be divided in two parts, 1386 and 62548, that multiplied together give a triangular number (86691528 = T₁₃₁₆₇).

The spelling of 138662548 in words is "one hundred thirty-eight million, six hundred sixty-two thousand, five hundred forty-eight".