1128944473 has 2 divisors, whose sum is σ = 1128944474. Its totient is φ = 1128944472.

The previous prime is 1128944461. The next prime is 1128944513. The reversal of 1128944473 is 3744498211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123054144 + 5890329 = 33512^2 + 2427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128944473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128944423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564472236 + 564472237.

It is an arithmetic number, because the mean of its divisors is an integer number (564472237).

Almost surely, 2^1128944473 is an apocalyptic number.

It is an amenable number.

1128944473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128944473 is an equidigital number, since it uses as much as digits as its factorization.

1128944473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 1128944473 is about 33599.7689426579. The cubic root of 1128944473 is about 1041.2560246896.

The spelling of 1128944473 in words is "one billion, one hundred twenty-eight million, nine hundred forty-four thousand, four hundred seventy-three".