138027901 has 4 divisors (see below), whose sum is σ = 150575904. Its totient is φ = 125479900.

The previous prime is 138027887. The next prime is 138027917. The reversal of 138027901 is 109720831.

138027901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138027901 - 2¹³ = 138019709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138027101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6273985 + ... + 6274006.

It is an arithmetic number, because the mean of its divisors is an integer number (37643976).

Almost surely, 2^138027901 is an apocalyptic number.

138027901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

138027901 is a deficient number, since it is larger than the sum of its proper divisors (12548003).

138027901 is a wasteful number, since it uses less digits than its factorization.

138027901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548002.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 138027901 is about 11748.5276098752. The cubic root of 138027901 is about 516.7997496001.

The spelling of 138027901 in words is "one hundred thirty-eight million, twenty-seven thousand, nine hundred one".