1428875873 has 4 divisors (see below), whose sum is σ = 1428952068. Its totient is φ = 1428799680.

The previous prime is 1428875837. The next prime is 1428875909. The reversal of 1428875873 is 3785788241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (1428875837) and next prime (1428875909).

It can be written as a sum of positive squares in 2 ways, for example, as 699443809 + 729432064 = 26447^2 + 27008^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428875873 - 2¹⁰ = 1428874849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1428875573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11933 + ... + 54773.

It is an arithmetic number, because the mean of its divisors is an integer number (357238017).

Almost surely, 2^1428875873 is an apocalyptic number.

It is an amenable number.

1428875873 is a deficient number, since it is larger than the sum of its proper divisors (76195).

1428875873 is an equidigital number, since it uses as much as digits as its factorization.

1428875873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76194.

The product of its digits is 3010560, while the sum is 53.

The square root of 1428875873 is about 37800.4745076037. The cubic root of 1428875873 is about 1126.3278800692.

The spelling of 1428875873 in words is "one billion, four hundred twenty-eight million, eight hundred seventy-five thousand, eight hundred seventy-three".