384981133 has 16 divisors (see below), whose sum is σ = 413210160. Its totient is φ = 357405696.

The previous prime is 384981127. The next prime is 384981139. The reversal of 384981133 is 331189483.

It is an interprime number because it is at equal distance from previous prime (384981127) and next prime (384981139).

It can be written as a sum of positive squares in 8 ways, for example, as 311364 + 384669769 = 558^2 + 19613^2 .

It is a cyclic number.

It is not a de Polignac number, because 384981133 - 2⁵ = 384981101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384981139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690891 + ... + 691447.

It is an arithmetic number, because the mean of its divisors is an integer number (25825635).

Almost surely, 2^384981133 is an apocalyptic number.

It is an amenable number.

384981133 is a deficient number, since it is larger than the sum of its proper divisors (28229027).

384981133 is a wasteful number, since it uses less digits than its factorization.

384981133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its digits is 62208, while the sum is 40.

The square root of 384981133 is about 19620.9360887803. The cubic root of 384981133 is about 727.4667512743.

The spelling of 384981133 in words is "three hundred eighty-four million, nine hundred eighty-one thousand, one hundred thirty-three".