1028764873 has 2 divisors, whose sum is σ = 1028764874. Its totient is φ = 1028764872.

The previous prime is 1028764871. The next prime is 1028764889. The reversal of 1028764873 is 3784678201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960256144 + 68508729 = 30988^2 + 8277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028764873 - 2¹ = 1028764871 is a prime.

It is a super-2 number, since 2×1028764873² = 2116714327837412258, which contains 22 as substring.

Together with 1028764871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1028764871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514382436 + 514382437.

It is an arithmetic number, because the mean of its divisors is an integer number (514382437).

Almost surely, 2^1028764873 is an apocalyptic number.

It is an amenable number.

1028764873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028764873 is an equidigital number, since it uses as much as digits as its factorization.

1028764873 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 1028764873 is about 32074.3647326023. The cubic root of 1028764873 is about 1009.4977972544.

The spelling of 1028764873 in words is "one billion, twenty-eight million, seven hundred sixty-four thousand, eight hundred seventy-three".