1028147903 has 4 divisors (see below), whose sum is σ = 1029653928. Its totient is φ = 1026641880.

The previous prime is 1028147899. The next prime is 1028147921. The reversal of 1028147903 is 3097418201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3097418201 = 19457 ⋅159193.

It is a cyclic number.

It is not a de Polignac number, because 1028147903 - 2² = 1028147899 is a prime.

It is a super-2 number, since 2×1028147903² = 2114176220886594818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028147963) 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, 751988 + ... + 753353.

It is an arithmetic number, because the mean of its divisors is an integer number (257413482).

Almost surely, 2^1028147903 is an apocalyptic number.

1028147903 is a deficient number, since it is larger than the sum of its proper divisors (1506025).

1028147903 is an equidigital number, since it uses as much as digits as its factorization.

1028147903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506024.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1028147903 is about 32064.7454847220. The cubic root of 1028147903 is about 1009.2959518436.

The spelling of 1028147903 in words is "one billion, twenty-eight million, one hundred forty-seven thousand, nine hundred three".