1128512893 has 2 divisors, whose sum is σ = 1128512894. Its totient is φ = 1128512892.

The previous prime is 1128512863. The next prime is 1128512909. The reversal of 1128512893 is 3982158211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956850489 + 171662404 = 30933^2 + 13102^2 .

It is an emirp because it is prime and its reverse (3982158211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1128512893 - 2⁹ = 1128512381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128512863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564256446 + 564256447.

It is an arithmetic number, because the mean of its divisors is an integer number (564256447).

Almost surely, 2^1128512893 is an apocalyptic number.

It is an amenable number.

1128512893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128512893 is an equidigital number, since it uses as much as digits as its factorization.

1128512893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 40.

The square root of 1128512893 is about 33593.3459631517. The cubic root of 1128512893 is about 1041.1233218086.

The spelling of 1128512893 in words is "one billion, one hundred twenty-eight million, five hundred twelve thousand, eight hundred ninety-three".