1128768137 has 4 divisors (see below), whose sum is σ = 1290020736. Its totient is φ = 967515540.

The previous prime is 1128768133. The next prime is 1128768149. The reversal of 1128768137 is 7318678211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1128768137 - 2² = 1128768133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128768133) 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 in 3 ways as a sum of consecutive naturals, for example, 80626289 + ... + 80626302.

It is an arithmetic number, because the mean of its divisors is an integer number (322505184).

Almost surely, 2^1128768137 is an apocalyptic number.

It is an amenable number.

1128768137 is a deficient number, since it is larger than the sum of its proper divisors (161252599).

1128768137 is an equidigital number, since it uses as much as digits as its factorization.

1128768137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161252598.

The product of its digits is 112896, while the sum is 44.

The square root of 1128768137 is about 33597.1447745192. The cubic root of 1128768137 is about 1041.2018087125.

The spelling of 1128768137 in words is "one billion, one hundred twenty-eight million, seven hundred sixty-eight thousand, one hundred thirty-seven".