1128989803 has 2 divisors, whose sum is σ = 1128989804. Its totient is φ = 1128989802.

The previous prime is 1128989783. The next prime is 1128989863. The reversal of 1128989803 is 3089898211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128989803 - 2²⁵ = 1095435371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128989863) 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 as a sum of consecutive naturals, namely, 564494901 + 564494902.

It is an arithmetic number, because the mean of its divisors is an integer number (564494902).

Almost surely, 2^1128989803 is an apocalyptic number.

1128989803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128989803 is an equidigital number, since it uses as much as digits as its factorization.

1128989803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 1128989803 is about 33600.4434940969. The cubic root of 1128989803 is about 1041.2699608647.

The spelling of 1128989803 in words is "one billion, one hundred twenty-eight million, nine hundred eighty-nine thousand, eight hundred three".