1028980243 has 2 divisors, whose sum is σ = 1028980244. Its totient is φ = 1028980242.

The previous prime is 1028980231. The next prime is 1028980261. The reversal of 1028980243 is 3420898201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028980243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028980343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514490121 + 514490122.

It is an arithmetic number, because the mean of its divisors is an integer number (514490122).

Almost surely, 2^1028980243 is an apocalyptic number.

1028980243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028980243 is an equidigital number, since it uses as much as digits as its factorization.

1028980243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1028980243 is about 32077.7219110086. The cubic root of 1028980243 is about 1009.5682378303.

The spelling of 1028980243 in words is "one billion, twenty-eight million, nine hundred eighty thousand, two hundred forty-three".