1128631048 has 16 divisors (see below), whose sum is σ = 2189155500. Its totient is φ = 544856256.

The previous prime is 1128630991. The next prime is 1128631057. The reversal of 1128631048 is 8401368211.

It can be written as a sum of positive squares in 2 ways, for example, as 1018758724 + 109872324 = 31918^2 + 10482^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2432163 + ... + 2432626.

Almost surely, 2^1128631048 is an apocalyptic number.

It is an amenable number.

1128631048 is a deficient number, since it is larger than the sum of its proper divisors (1060524452).

1128631048 is a wasteful number, since it uses less digits than its factorization.

1128631048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864824 (or 4864820 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1128631048 is about 33595.1045243202. The cubic root of 1128631048 is about 1041.1596556523.

Adding to 1128631048 its reverse (8401368211), we get a palindrome (9529999259).

The spelling of 1128631048 in words is "one billion, one hundred twenty-eight million, six hundred thirty-one thousand, forty-eight".