138171363 has 16 divisors (see below), whose sum is σ = 211555200. Its totient is φ = 79332480.

The previous prime is 138171361. The next prime is 138171403. The reversal of 138171363 is 363171831.

138171363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138171363 - 2¹ = 138171361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (138171361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109558 + ... + 110811.

It is an arithmetic number, because the mean of its divisors is an integer number (13222200).

Almost surely, 2^138171363 is an apocalyptic number.

138171363 is a deficient number, since it is larger than the sum of its proper divisors (73383837).

138171363 is a wasteful number, since it uses less digits than its factorization.

138171363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220402.

The product of its digits is 9072, while the sum is 33.

The square root of 138171363 is about 11754.6315552637. The cubic root of 138171363 is about 516.9787362477.

The spelling of 138171363 in words is "one hundred thirty-eight million, one hundred seventy-one thousand, three hundred sixty-three".