1138285133 has 8 divisors (see below), whose sum is σ = 1205538552. Its totient is φ = 1071064576.

The previous prime is 1138285123. The next prime is 1138285139. The reversal of 1138285133 is 3315828311.

It can be written as a sum of positive squares in 4 ways, for example, as 331895524 + 806389609 = 18218^2 + 28397^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1138285133 - 2¹² = 1138281037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1138285093 and 1138285102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138285139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124391 + ... + 133227.

It is an arithmetic number, because the mean of its divisors is an integer number (150692319).

Almost surely, 2^1138285133 is an apocalyptic number.

It is an amenable number.

1138285133 is a deficient number, since it is larger than the sum of its proper divisors (67253419).

1138285133 is an equidigital number, since it uses as much as digits as its factorization.

1138285133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16431.

The product of its digits is 17280, while the sum is 35.

The square root of 1138285133 is about 33738.4814862791. The cubic root of 1138285133 is about 1044.1198553573.

The spelling of 1138285133 in words is "one billion, one hundred thirty-eight million, two hundred eighty-five thousand, one hundred thirty-three".