138003018 has 16 divisors (see below), whose sum is σ = 276125760. Its totient is φ = 45981056.

The previous prime is 138002999. The next prime is 138003029. The reversal of 138003018 is 810300831.

138003018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 in 7 ways as a sum of consecutive naturals, for example, 18523 + ... + 24881.

It is an arithmetic number, because the mean of its divisors is an integer number (17257860).

Almost surely, 2^138003018 is an apocalyptic number.

138003018 is an abundant number, since it is smaller than the sum of its proper divisors (138122742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138003018 is a wasteful number, since it uses less digits than its factorization.

138003018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9981.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 138003018 is about 11747.4685783789. The cubic root of 138003018 is about 516.7686923503.

Adding to 138003018 its reverse (810300831), we get a palindrome (948303849).

The spelling of 138003018 in words is "one hundred thirty-eight million, three thousand, eighteen".