1028900849 has 2 divisors, whose sum is σ = 1028900850. Its totient is φ = 1028900848.

The previous prime is 1028900779. The next prime is 1028900867. The reversal of 1028900849 is 9480098201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793830625 + 235070224 = 28175^2 + 15332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028900849 - 2²⁸ = 760465393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028900869) 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 as a sum of consecutive naturals, namely, 514450424 + 514450425.

It is an arithmetic number, because the mean of its divisors is an integer number (514450425).

Almost surely, 2^1028900849 is an apocalyptic number.

It is an amenable number.

1028900849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028900849 is an equidigital number, since it uses as much as digits as its factorization.

1028900849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1028900849 is about 32076.4843616005. The cubic root of 1028900849 is about 1009.5422717593.

The spelling of 1028900849 in words is "one billion, twenty-eight million, nine hundred thousand, eight hundred forty-nine".