138330087 has 48 divisors (see below), whose sum is σ = 228209760. Its totient is φ = 74172672.

The previous prime is 138330083. The next prime is 138330131. The reversal of 138330087 is 780033831.

It is not a de Polignac number, because 138330087 - 2² = 138330083 is a prime.

It is a super-3 number, since 3×138330087³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138330083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157293 + ... + 158169.

It is an arithmetic number, because the mean of its divisors is an integer number (4754370).

Almost surely, 2^138330087 is an apocalyptic number.

138330087 is a deficient number, since it is larger than the sum of its proper divisors (89879673).

138330087 is a wasteful number, since it uses less digits than its factorization.

138330087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 138330087 is about 11761.3811688934. The cubic root of 138330087 is about 517.1766198281.

The spelling of 138330087 in words is "one hundred thirty-eight million, three hundred thirty thousand, eighty-seven".