1128110015 has 4 divisors (see below), whose sum is σ = 1353732024. Its totient is φ = 902488008.

The previous prime is 1128109993. The next prime is 1128110017. The reversal of 1128110015 is 5100118211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1128110015 - 2¹² = 1128105919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128110017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112810997 + ... + 112811006.

It is an arithmetic number, because the mean of its divisors is an integer number (338433006).

Almost surely, 2^1128110015 is an apocalyptic number.

1128110015 is a deficient number, since it is larger than the sum of its proper divisors (225622009).

1128110015 is an equidigital number, since it uses as much as digits as its factorization.

1128110015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225622008.

The product of its (nonzero) digits is 80, while the sum is 20.

The square root of 1128110015 is about 33587.3490320388. The cubic root of 1128110015 is about 1040.9994137263. Note that the first 3 decimals are identical.

Adding to 1128110015 its reverse (5100118211), we get a palindrome (6228228226).

The spelling of 1128110015 in words is "one billion, one hundred twenty-eight million, one hundred ten thousand, fifteen".