1128807815 has 16 divisors (see below), whose sum is σ = 1380598560. Its totient is φ = 885859200.

The previous prime is 1128807809. The next prime is 1128807817. The reversal of 1128807815 is 5187088211.

It is not a de Polignac number, because 1128807815 - 2⁶ = 1128807751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128807817) 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, 44792 + ... + 65298.

It is an arithmetic number, because the mean of its divisors is an integer number (86287410).

Almost surely, 2^1128807815 is an apocalyptic number.

1128807815 is a deficient number, since it is larger than the sum of its proper divisors (251790745).

1128807815 is a wasteful number, since it uses less digits than its factorization.

1128807815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20722.

The product of its (nonzero) digits is 35840, while the sum is 41.

The square root of 1128807815 is about 33597.7352659372. The cubic root of 1128807815 is about 1041.2140085375.

The spelling of 1128807815 in words is "one billion, one hundred twenty-eight million, eight hundred seven thousand, eight hundred fifteen".