1128729859 has 2 divisors, whose sum is σ = 1128729860. Its totient is φ = 1128729858.

The previous prime is 1128729829. The next prime is 1128729883. The reversal of 1128729859 is 9589278211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1128729859 - 2¹¹ = 1128727811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128729829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564364929 + 564364930.

It is an arithmetic number, because the mean of its divisors is an integer number (564364930).

Almost surely, 2^1128729859 is an apocalyptic number.

1128729859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128729859 is an equidigital number, since it uses as much as digits as its factorization.

1128729859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 52.

The square root of 1128729859 is about 33596.5751081863. The cubic root of 1128729859 is about 1041.1900390756.

The spelling of 1128729859 in words is "one billion, one hundred twenty-eight million, seven hundred twenty-nine thousand, eight hundred fifty-nine".