1138553833 has 16 divisors (see below), whose sum is σ = 1220405760. Its totient is φ = 1059811200.

The previous prime is 1138553831. The next prime is 1138553873. The reversal of 1138553833 is 3383558311.

It is a cyclic number.

It is not a de Polignac number, because 1138553833 - 2¹ = 1138553831 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138553831) 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 15 ways as a sum of consecutive naturals, for example, 250366 + ... + 254872.

It is an arithmetic number, because the mean of its divisors is an integer number (76275360).

Almost surely, 2^1138553833 is an apocalyptic number.

It is an amenable number.

1138553833 is a deficient number, since it is larger than the sum of its proper divisors (81851927).

1138553833 is a wasteful number, since it uses less digits than its factorization.

1138553833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848.

The product of its digits is 129600, while the sum is 40.

The square root of 1138553833 is about 33742.4633510952. The cubic root of 1138553833 is about 1044.2020061074.

The spelling of 1138553833 in words is "one billion, one hundred thirty-eight million, five hundred fifty-three thousand, eight hundred thirty-three".