1128048469 has 4 divisors (see below), whose sum is σ = 1129263660. Its totient is φ = 1126833280.

The previous prime is 1128048443. The next prime is 1128048473. The reversal of 1128048469 is 9648408211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9648408211 = 13 ⋅742185247.

It can be written as a sum of positive squares in 2 ways, for example, as 163200625 + 964847844 = 12775^2 + 31062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128048469 - 2⁵ = 1128048437 is a prime.

It is a super-2 number, since 2×1128048469² = 2544986696826487922, 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 (1128048419) 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, 606202 + ... + 608059.

It is an arithmetic number, because the mean of its divisors is an integer number (282315915).

Almost surely, 2^1128048469 is an apocalyptic number.

It is an amenable number.

1128048469 is a deficient number, since it is larger than the sum of its proper divisors (1215191).

1128048469 is an equidigital number, since it uses as much as digits as its factorization.

1128048469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215190.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1128048469 is about 33586.4328114791. The cubic root of 1128048469 is about 1040.9804822053.

The spelling of 1128048469 in words is "one billion, one hundred twenty-eight million, forty-eight thousand, four hundred sixty-nine".