1128831547 has 2 divisors, whose sum is σ = 1128831548. Its totient is φ = 1128831546.

The previous prime is 1128831533. The next prime is 1128831563. The reversal of 1128831547 is 7451388211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128831547 - 2⁷ = 1128831419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128831647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564415773 + 564415774.

It is an arithmetic number, because the mean of its divisors is an integer number (564415774).

Almost surely, 2^1128831547 is an apocalyptic number.

1128831547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128831547 is an equidigital number, since it uses as much as digits as its factorization.

1128831547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 40.

The square root of 1128831547 is about 33598.0884426480. The cubic root of 1128831547 is about 1041.2213052971.

The spelling of 1128831547 in words is "one billion, one hundred twenty-eight million, eight hundred thirty-one thousand, five hundred forty-seven".