1028649653 has 2 divisors, whose sum is σ = 1028649654. Its totient is φ = 1028649652.

The previous prime is 1028649647. The next prime is 1028649659. The reversal of 1028649653 is 3569468201.

It is a balanced prime because it is at equal distance from previous prime (1028649647) and next prime (1028649659).

It can be written as a sum of positive squares in only one way, i.e., 912160804 + 116488849 = 30202^2 + 10793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028649653 - 2⁴ = 1028649637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028649659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514324826 + 514324827.

It is an arithmetic number, because the mean of its divisors is an integer number (514324827).

Almost surely, 2^1028649653 is an apocalyptic number.

It is an amenable number.

1028649653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028649653 is an equidigital number, since it uses as much as digits as its factorization.

1028649653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 1028649653 is about 32072.5685438507. The cubic root of 1028649653 is about 1009.4601084744.

The spelling of 1028649653 in words is "one billion, twenty-eight million, six hundred forty-nine thousand, six hundred fifty-three".