1128310643 has 2 divisors, whose sum is σ = 1128310644. Its totient is φ = 1128310642.

The previous prime is 1128310637. The next prime is 1128310657. The reversal of 1128310643 is 3460138211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128310643 - 2²⁰ = 1127262067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128310633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564155321 + 564155322.

It is an arithmetic number, because the mean of its divisors is an integer number (564155322).

Almost surely, 2^1128310643 is an apocalyptic number.

1128310643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128310643 is an equidigital number, since it uses as much as digits as its factorization.

1128310643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1128310643 is about 33590.3355595028. The cubic root of 1128310643 is about 1041.0611220253.

Adding to 1128310643 its reverse (3460138211), we get a palindrome (4588448854).

The spelling of 1128310643 in words is "one billion, one hundred twenty-eight million, three hundred ten thousand, six hundred forty-three".