138063818 has 16 divisors (see below), whose sum is σ = 210625920. Its totient is φ = 67859616.

The previous prime is 138063811. The next prime is 138063853. The reversal of 138063818 is 818360831.

138063818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138063811) 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, 95630 + ... + 97062.

It is an arithmetic number, because the mean of its divisors is an integer number (13164120).

Almost surely, 2^138063818 is an apocalyptic number.

138063818 is a deficient number, since it is larger than the sum of its proper divisors (72562102).

138063818 is a wasteful number, since it uses less digits than its factorization.

138063818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 138063818 is about 11750.0560849725. The cubic root of 138063818 is about 516.8445721485.

The spelling of 138063818 in words is "one hundred thirty-eight million, sixty-three thousand, eight hundred eighteen".