138000000007 has 4 divisors (see below), whose sum is σ = 139890411040. Its totient is φ = 136109588976.

The previous prime is 138000000001. The next prime is 138000000113. The reversal of 138000000007 is 700000000831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700000000831 = 139 ⋅5035971229.

It is a cyclic number.

It is not a de Polignac number, because 138000000007 - 2¹⁵ = 137999967239 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 (138000000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945205407 + ... + 945205552.

It is an arithmetic number, because the mean of its divisors is an integer number (34972602760).

Almost surely, 2^138000000007 is an apocalyptic number.

138000000007 is a deficient number, since it is larger than the sum of its proper divisors (1890411033).

138000000007 is an equidigital number, since it uses as much as digits as its factorization.

138000000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890411032.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 138000000007 its reverse (700000000831), we get a palindrome (838000000838).

The spelling of 138000000007 in words is "one hundred thirty-eight billion, seven", and thus it is an aban number.