1128380618 has 4 divisors (see below), whose sum is σ = 1692570930. Its totient is φ = 564190308.

The previous prime is 1128380611. The next prime is 1128380629. The reversal of 1128380618 is 8160838211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8160838211 = 787 ⋅10369553.

It can be written as a sum of positive squares in only one way, i.e., 925802329 + 202578289 = 30427^2 + 14233^2 .

It is not an unprimeable number, because it can be changed into a prime (1128380611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282095153 + ... + 282095156.

Almost surely, 2^1128380618 is an apocalyptic number.

1128380618 is a deficient number, since it is larger than the sum of its proper divisors (564190312).

1128380618 is an equidigital number, since it uses as much as digits as its factorization.

1128380618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564190311.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1128380618 is about 33591.3771375929. The cubic root of 1128380618 is about 1041.0826429148.

The spelling of 1128380618 in words is "one billion, one hundred twenty-eight million, three hundred eighty thousand, six hundred eighteen".