1128138136 has 8 divisors (see below), whose sum is σ = 2115259020. Its totient is φ = 564069064.

The previous prime is 1128138107. The next prime is 1128138157. The reversal of 1128138136 is 6318318211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70508626 + ... + 70508641.

Almost surely, 2^1128138136 is an apocalyptic number.

It is an amenable number.

1128138136 is a deficient number, since it is larger than the sum of its proper divisors (987120884).

1128138136 is a wasteful number, since it uses less digits than its factorization.

1128138136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141017273 (or 141017269 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 1128138136 is about 33587.7676543113. The cubic root of 1128138136 is about 1041.0080635036.

The spelling of 1128138136 in words is "one billion, one hundred twenty-eight million, one hundred thirty-eight thousand, one hundred thirty-six".