1115516015 has 4 divisors (see below), whose sum is σ = 1338619224. Its totient is φ = 892412808.

The previous prime is 1115515931. The next prime is 1115516023. The reversal of 1115516015 is 5106155111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5106155111 = 31 ⋅164714681.

It is a cyclic number.

It is not a de Polignac number, because 1115516015 - 2⁸ = 1115515759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111551597 + ... + 111551606.

It is an arithmetic number, because the mean of its divisors is an integer number (334654806).

Almost surely, 2^1115516015 is an apocalyptic number.

1115516015 is a deficient number, since it is larger than the sum of its proper divisors (223103209).

1115516015 is an equidigital number, since it uses as much as digits as its factorization.

1115516015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223103208.

The product of its (nonzero) digits is 750, while the sum is 26.

The square root of 1115516015 is about 33399.3415354255. The cubic root of 1115516015 is about 1037.1110699737. Note that the first 3 decimals are identical.

The spelling of 1115516015 in words is "one billion, one hundred fifteen million, five hundred sixteen thousand, fifteen".