1128736945 has 16 divisors (see below), whose sum is σ = 1551184128. Its totient is φ = 772390080.

The previous prime is 1128736909. The next prime is 1128736949. The reversal of 1128736945 is 5496378211.

It is not a de Polignac number, because 1128736945 - 2²³ = 1120348337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1128736895 and 1128736904.

It is not an unprimeable number, because it can be changed into a prime (1128736949) 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 15 ways as a sum of consecutive naturals, for example, 16066 + ... + 50155.

It is an arithmetic number, because the mean of its divisors is an integer number (96949008).

Almost surely, 2^1128736945 is an apocalyptic number.

It is an amenable number.

1128736945 is a deficient number, since it is larger than the sum of its proper divisors (422447183).

1128736945 is an equidigital number, since it uses as much as digits as its factorization.

1128736945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66720.

The product of its digits is 362880, while the sum is 46.

The square root of 1128736945 is about 33596.6805651987. The cubic root of 1128736945 is about 1041.1922178837.

The spelling of 1128736945 in words is "one billion, one hundred twenty-eight million, seven hundred thirty-six thousand, nine hundred forty-five".