138548733 has 8 divisors (see below), whose sum is σ = 184795488. Its totient is φ = 92333904.

The previous prime is 138548723. The next prime is 138548743. The reversal of 138548733 is 337845831.

It is an interprime number because it is at equal distance from previous prime (138548723) and next prime (138548743).

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

It is a de Polignac number, because none of the positive numbers 2^k-138548733 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138548713) 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 7 ways as a sum of consecutive naturals, for example, 5310 + ... + 17472.

It is an arithmetic number, because the mean of its divisors is an integer number (23099436).

Almost surely, 2^138548733 is an apocalyptic number.

It is an amenable number.

138548733 is a deficient number, since it is larger than the sum of its proper divisors (46246755).

138548733 is a wasteful number, since it uses less digits than its factorization.

138548733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963.

The product of its digits is 241920, while the sum is 42.

The square root of 138548733 is about 11770.6725806132. The cubic root of 138548733 is about 517.4489613367.

The spelling of 138548733 in words is "one hundred thirty-eight million, five hundred forty-eight thousand, seven hundred thirty-three".