1128263138 has 8 divisors (see below), whose sum is σ = 1701745500. Its totient is φ = 561014640.

The previous prime is 1128263119. The next prime is 1128263161. The reversal of 1128263138 is 8313628211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 761042569 + 367220569 = 27587^2 + 19163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1128263098 and 1128263107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558013 + ... + 1558736.

Almost surely, 2^1128263138 is an apocalyptic number.

1128263138 is a deficient number, since it is larger than the sum of its proper divisors (573482362).

1128263138 is a wasteful number, since it uses less digits than its factorization.

1128263138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116932.

The product of its digits is 13824, while the sum is 35.

The square root of 1128263138 is about 33589.6284290255. The cubic root of 1128263138 is about 1041.0465113023.

The spelling of 1128263138 in words is "one billion, one hundred twenty-eight million, two hundred sixty-three thousand, one hundred thirty-eight".