1028923159 has 4 divisors (see below), whose sum is σ = 1122461640. Its totient is φ = 935384680.

The previous prime is 1028923153. The next prime is 1028923183. The reversal of 1028923159 is 9513298201.

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 1028923159 - 2⁹ = 1028922647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028923153) 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, 46769224 + ... + 46769245.

It is an arithmetic number, because the mean of its divisors is an integer number (280615410).

Almost surely, 2^1028923159 is an apocalyptic number.

1028923159 is a deficient number, since it is larger than the sum of its proper divisors (93538481).

1028923159 is an equidigital number, since it uses as much as digits as its factorization.

1028923159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93538480.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1028923159 is about 32076.8321222654. The cubic root of 1028923159 is about 1009.5495684537.

The spelling of 1028923159 in words is "one billion, twenty-eight million, nine hundred twenty-three thousand, one hundred fifty-nine".