1115015856 has 80 divisors (see below), whose sum is σ = 3061527264. Its totient is φ = 348475392.

The previous prime is 1115015851. The next prime is 1115015857. The reversal of 1115015856 is 6585105111.

It is a super-3 number, since 3×1115015856³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1115015851) 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, 223566 + ... + 228498.

Almost surely, 2^1115015856 is an apocalyptic number.

1115015856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115015856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530763632).

1115015856 is an abundant number, since it is smaller than the sum of its proper divisors (1946511408).

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

1115015856 is a wasteful number, since it uses less digits than its factorization.

1115015856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238 (or 5232 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 33.

The square root of 1115015856 is about 33391.8531381533. The cubic root of 1115015856 is about 1036.9560451620.

The spelling of 1115015856 in words is "one billion, one hundred fifteen million, fifteen thousand, eight hundred fifty-six".