7915440038 has 8 divisors (see below), whose sum is σ = 12952538280. Its totient is φ = 3597927280.

The previous prime is 7915440031. The next prime is 7915440047. The reversal of 7915440038 is 8300445197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7915439977 and 7915440004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7915440031) 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, 179896343 + ... + 179896386.

It is an arithmetic number, because the mean of its divisors is an integer number (1619067285).

Almost surely, 2^7915440038 is an apocalyptic number.

7915440038 is a deficient number, since it is larger than the sum of its proper divisors (5037098242).

7915440038 is a wasteful number, since it uses less digits than its factorization.

7915440038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359792742.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 7915440038 is about 88968.7587752015. The cubic root of 7915440038 is about 1992.9283619375.

The spelling of 7915440038 in words is "seven billion, nine hundred fifteen million, four hundred forty thousand, thirty-eight".