1028764799 has 4 divisors (see below), whose sum is σ = 1029276864. Its totient is φ = 1028252736.

The previous prime is 1028764787. The next prime is 1028764871. The reversal of 1028764799 is 9974678201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9974678201 = 149 ⋅66944149.

It is a cyclic number.

It is not a de Polignac number, because 1028764799 - 2⁴ = 1028764783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1028764799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028769799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253007 + ... + 257040.

It is an arithmetic number, because the mean of its divisors is an integer number (257319216).

Almost surely, 2^1028764799 is an apocalyptic number.

1028764799 is a deficient number, since it is larger than the sum of its proper divisors (512065).

1028764799 is an equidigital number, since it uses as much as digits as its factorization.

1028764799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512064.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 1028764799 is about 32074.3635790330. The cubic root of 1028764799 is about 1009.4977730497.

The spelling of 1028764799 in words is "one billion, twenty-eight million, seven hundred sixty-four thousand, seven hundred ninety-nine".