1028943047 has 4 divisors (see below), whose sum is σ = 1122483336. Its totient is φ = 935402760.

The previous prime is 1028943031. The next prime is 1028943049. The reversal of 1028943047 is 7403498201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1028943047 - 2⁴ = 1028943031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1028943047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028943049) 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 in 3 ways as a sum of consecutive naturals, for example, 46770128 + ... + 46770149.

It is an arithmetic number, because the mean of its divisors is an integer number (280620834).

Almost surely, 2^1028943047 is an apocalyptic number.

1028943047 is a deficient number, since it is larger than the sum of its proper divisors (93540289).

1028943047 is an equidigital number, since it uses as much as digits as its factorization.

1028943047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93540288.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1028943047 is about 32077.1421264426. The cubic root of 1028943047 is about 1009.5560729215.

The spelling of 1028943047 in words is "one billion, twenty-eight million, nine hundred forty-three thousand, forty-seven".