9438855915 has 16 divisors (see below), whose sum is σ = 15104164608. Its totient is φ = 5033391456.

The previous prime is 9438855869. The next prime is 9438855917. The reversal of 9438855915 is 5195588349.

It is a happy number.

It is not a de Polignac number, because 9438855915 - 2⁹ = 9438855403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9438855917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88992 + ... + 163698.

It is an arithmetic number, because the mean of its divisors is an integer number (944010288).

Almost surely, 2^9438855915 is an apocalyptic number.

9438855915 is a deficient number, since it is larger than the sum of its proper divisors (5665308693).

9438855915 is a wasteful number, since it uses less digits than its factorization.

9438855915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83138.

The product of its digits is 7776000, while the sum is 57.

The square root of 9438855915 is about 97153.7745792720. The cubic root of 9438855915 is about 2113.3582271551.

The spelling of 9438855915 in words is "nine billion, four hundred thirty-eight million, eight hundred fifty-five thousand, nine hundred fifteen".