1028923090859 has 2 divisors, whose sum is σ = 1028923090860. Its totient is φ = 1028923090858.

The previous prime is 1028923090829. The next prime is 1028923090861. The reversal of 1028923090859 is 9580903298201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028923090859 is a prime.

It is a Sophie Germain prime.

Together with 1028923090861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1028923090829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514461545429 + 514461545430.

It is an arithmetic number, because the mean of its divisors is an integer number (514461545430).

Almost surely, 2^{1028923090859} is an apocalyptic number.

1028923090859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028923090859 is an equidigital number, since it uses as much as digits as its factorization.

1028923090859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 1028923090859 in words is "one trillion, twenty-eight billion, nine hundred twenty-three million, ninety thousand, eight hundred fifty-nine".