7415115138 has 16 divisors (see below), whose sum is σ = 16478033760. Its totient is φ = 2471705028.

The previous prime is 7415115137. The next prime is 7415115209. The reversal of 7415115138 is 8315115147.

It is a happy number.

7415115138 is a `hidden beast` number, since 7 + 4 + 1 + 511 + 5 + 138 = 666.

It is not an unprimeable number, because it can be changed into a prime (7415115137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68658420 + ... + 68658527.

It is an arithmetic number, because the mean of its divisors is an integer number (1029877110).

Almost surely, 2^7415115138 is an apocalyptic number.

7415115138 is an abundant number, since it is smaller than the sum of its proper divisors (9062918622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7415115138 is a wasteful number, since it uses less digits than its factorization.

7415115138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137316958 (or 137316952 counting only the distinct ones).

The product of its digits is 16800, while the sum is 36.

The square root of 7415115138 is about 86111.0628084452. The cubic root of 7415115138 is about 1950.0210506603.

Subtracting 7415115138 from its reverse (8315115147), we obtain a palindrome (900000009).

The spelling of 7415115138 in words is "seven billion, four hundred fifteen million, one hundred fifteen thousand, one hundred thirty-eight".