1028915999 has 2 divisors, whose sum is σ = 1028916000. Its totient is φ = 1028915998.

The previous prime is 1028915941. The next prime is 1028916011. The reversal of 1028915999 is 9995198201.

1028915999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1028915999 - 2¹⁶ = 1028850463 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1028915999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028915929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514457999 + 514458000.

It is an arithmetic number, because the mean of its divisors is an integer number (514458000).

Almost surely, 2^1028915999 is an apocalyptic number.

1028915999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028915999 is an equidigital number, since it uses as much as digits as its factorization.

1028915999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 53.

The square root of 1028915999 is about 32076.7205150402. The cubic root of 1028915999 is about 1009.5472267202.

The spelling of 1028915999 in words is "one billion, twenty-eight million, nine hundred fifteen thousand, nine hundred ninety-nine".