138545319 has 8 divisors (see below), whose sum is σ = 201520512. Its totient is φ = 83966840.

The previous prime is 138545299. The next prime is 138545333. The reversal of 138545319 is 913545831.

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 138545319 - 2⁵ = 138545287 is a prime.

It is a super-2 number, since 2×138545319² = 38389610833623522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138545389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2099139 + ... + 2099204.

It is an arithmetic number, because the mean of its divisors is an integer number (25190064).

Almost surely, 2^138545319 is an apocalyptic number.

138545319 is a deficient number, since it is larger than the sum of its proper divisors (62975193).

138545319 is a wasteful number, since it uses less digits than its factorization.

138545319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198357.

The product of its digits is 64800, while the sum is 39.

The square root of 138545319 is about 11770.5275582703. The cubic root of 138545319 is about 517.4447111228. Note that the first 3 decimals are identical.

The spelling of 138545319 in words is "one hundred thirty-eight million, five hundred forty-five thousand, three hundred nineteen".