1128349115 has 4 divisors (see below), whose sum is σ = 1354018944. Its totient is φ = 902679288.

The previous prime is 1128349091. The next prime is 1128349169. The reversal of 1128349115 is 5119438211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5119438211 = 131 ⋅39079681.

It is a cyclic number.

It is not a de Polignac number, because 1128349115 - 2¹⁴ = 1128332731 is a prime.

It is a Duffinian 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, 112834907 + ... + 112834916.

It is an arithmetic number, because the mean of its divisors is an integer number (338504736).

Almost surely, 2^1128349115 is an apocalyptic number.

1128349115 is a deficient number, since it is larger than the sum of its proper divisors (225669829).

1128349115 is an equidigital number, since it uses as much as digits as its factorization.

1128349115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225669828.

The product of its digits is 8640, while the sum is 35.

The square root of 1128349115 is about 33590.9082193382. The cubic root of 1128349115 is about 1041.0729542421.

The spelling of 1128349115 in words is "one billion, one hundred twenty-eight million, three hundred forty-nine thousand, one hundred fifteen".