1138456038 has 16 divisors (see below), whose sum is σ = 2277331056. Its totient is φ = 379415520.

The previous prime is 1138456031. The next prime is 1138456087. The reversal of 1138456038 is 8306548311.

It is a junction number, because it is equal to n+sod(n) for n = 1138455987 and 1138456005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138456031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26308 + ... + 54488.

It is an arithmetic number, because the mean of its divisors is an integer number (142333191).

Almost surely, 2^1138456038 is an apocalyptic number.

1138456038 is an abundant number, since it is smaller than the sum of its proper divisors (1138875018).

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

1138456038 is a wasteful number, since it uses less digits than its factorization.

1138456038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34919.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1138456038 is about 33741.0141815565. The cubic root of 1138456038 is about 1044.1721083382.

The spelling of 1138456038 in words is "one billion, one hundred thirty-eight million, four hundred fifty-six thousand, thirty-eight".