1011728843 has 2 divisors, whose sum is σ = 1011728844. Its totient is φ = 1011728842.

The previous prime is 1011728831. The next prime is 1011728867. The reversal of 1011728843 is 3488271101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011728843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011728813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505864421 + 505864422.

It is an arithmetic number, because the mean of its divisors is an integer number (505864422).

Almost surely, 2^1011728843 is an apocalyptic number.

1011728843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011728843 is an equidigital number, since it uses as much as digits as its factorization.

1011728843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1011728843 is about 31807.6852820195. The cubic root of 1011728843 is about 1003.8944280749.

Adding to 1011728843 its reverse (3488271101), we get a palindrome (4499999944).

The spelling of 1011728843 in words is "one billion, eleven million, seven hundred twenty-eight thousand, eight hundred forty-three".