1028243947 has 2 divisors, whose sum is σ = 1028243948. Its totient is φ = 1028243946.

The previous prime is 1028243927. The next prime is 1028243969. The reversal of 1028243947 is 7493428201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028243947 is a prime.

It is a super-2 number, since 2×1028243947² = 2114571229084277618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1028243927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514121973 + 514121974.

It is an arithmetic number, because the mean of its divisors is an integer number (514121974).

Almost surely, 2^1028243947 is an apocalyptic number.

1028243947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028243947 is an equidigital number, since it uses as much as digits as its factorization.

1028243947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1028243947 is about 32066.2431070433. The cubic root of 1028243947 is about 1009.3273785161.

The spelling of 1028243947 in words is "one billion, twenty-eight million, two hundred forty-three thousand, nine hundred forty-seven".