1028873647 has 2 divisors, whose sum is σ = 1028873648. Its totient is φ = 1028873646.

The previous prime is 1028873623. The next prime is 1028873707. The reversal of 1028873647 is 7463788201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1028873647 - 2¹⁹ = 1028349359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1028873597 and 1028873606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028873947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514436823 + 514436824.

It is an arithmetic number, because the mean of its divisors is an integer number (514436824).

Almost surely, 2^1028873647 is an apocalyptic number.

1028873647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028873647 is an equidigital number, since it uses as much as digits as its factorization.

1028873647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 1028873647 is about 32076.0603410082. The cubic root of 1028873647 is about 1009.5333749478.

The spelling of 1028873647 in words is "one billion, twenty-eight million, eight hundred seventy-three thousand, six hundred forty-seven".