1138045056 has 64 divisors (see below), whose sum is σ = 3026462400. Its totient is φ = 378905600.

The previous prime is 1138045039. The next prime is 1138045081. The reversal of 1138045056 is 6505408311.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 597706 + ... + 599606.

It is an arithmetic number, because the mean of its divisors is an integer number (47288475).

Almost surely, 2^1138045056 is an apocalyptic number.

1138045056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1138045056 is an abundant number, since it is smaller than the sum of its proper divisors (1888417344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138045056 is a wasteful number, since it uses less digits than its factorization.

1138045056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1138045056 is about 33734.9233880855. The cubic root of 1138045056 is about 1044.0464446976.

The spelling of 1138045056 in words is "one billion, one hundred thirty-eight million, forty-five thousand, fifty-six".