138748269 has 8 divisors (see below), whose sum is σ = 201815712. Its totient is φ = 84089840.

The previous prime is 138748243. The next prime is 138748273. The reversal of 138748269 is 962847831.

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 138748269 - 2¹⁵ = 138715501 is a prime.

It is a super-2 number, since 2×138748269² = 38502164300992722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138748289) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2102214 + ... + 2102279.

It is an arithmetic number, because the mean of its divisors is an integer number (25226964).

Almost surely, 2^138748269 is an apocalyptic number.

It is an amenable number.

138748269 is a deficient number, since it is larger than the sum of its proper divisors (63067443).

138748269 is a wasteful number, since it uses less digits than its factorization.

138748269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204507.

The product of its digits is 580608, while the sum is 48.

The square root of 138748269 is about 11779.1455123027. The cubic root of 138748269 is about 517.6972498320.

The spelling of 138748269 in words is "one hundred thirty-eight million, seven hundred forty-eight thousand, two hundred sixty-nine".