1028873761 has 2 divisors, whose sum is σ = 1028873762. Its totient is φ = 1028873760.

The previous prime is 1028873759. The next prime is 1028873773. The reversal of 1028873761 is 1673788201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1007427600 + 21446161 = 31740^2 + 4631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028873761 - 2¹ = 1028873759 is a prime.

Together with 1028873759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1028871761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514436880 + 514436881.

It is an arithmetic number, because the mean of its divisors is an integer number (514436881).

Almost surely, 2^1028873761 is an apocalyptic number.

It is an amenable number.

1028873761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028873761 is an equidigital number, since it uses as much as digits as its factorization.

1028873761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 1028873761 is about 32076.0621180344. The cubic root of 1028873761 is about 1009.5334122334.

The spelling of 1028873761 in words is "one billion, twenty-eight million, eight hundred seventy-three thousand, seven hundred sixty-one".