138002113 has 4 divisors (see below), whose sum is σ = 138386880. Its totient is φ = 137617348.

The previous prime is 138002087. The next prime is 138002129. The reversal of 138002113 is 311200831.

138002113 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 a de Polignac number, because none of the positive numbers 2^k-138002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138002713) 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, 191845 + ... + 192562.

It is an arithmetic number, because the mean of its divisors is an integer number (34596720).

Almost surely, 2^138002113 is an apocalyptic number.

It is an amenable number.

138002113 is a deficient number, since it is larger than the sum of its proper divisors (384767).

138002113 is an equidigital number, since it uses as much as digits as its factorization.

138002113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384766.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 138002113 is about 11747.4300593789. The cubic root of 138002113 is about 516.7675627212.

Adding to 138002113 its reverse (311200831), we get a palindrome (449202944).

The spelling of 138002113 in words is "one hundred thirty-eight million, two thousand, one hundred thirteen".