1115886857 has 8 divisors (see below), whose sum is σ = 1145128320. Its totient is φ = 1086948720.

The previous prime is 1115886841. The next prime is 1115886899. The reversal of 1115886857 is 7586885111.

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

It is a cyclic number.

It is not a de Polignac number, because 1115886857 - 2⁴ = 1115886841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115886257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68369 + ... + 83102.

It is an arithmetic number, because the mean of its divisors is an integer number (143141040).

Almost surely, 2^1115886857 is an apocalyptic number.

It is an amenable number.

1115886857 is a deficient number, since it is larger than the sum of its proper divisors (29241463).

1115886857 is a wasteful number, since it uses less digits than its factorization.

1115886857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151663.

The product of its digits is 537600, while the sum is 50.

The square root of 1115886857 is about 33404.8927104998. The cubic root of 1115886857 is about 1037.2259829308.

The spelling of 1115886857 in words is "one billion, one hundred fifteen million, eight hundred eighty-six thousand, eight hundred fifty-seven".