9933317381 has 4 divisors (see below), whose sum is σ = 10697418732. Its totient is φ = 9169216032.

The previous prime is 9933317371. The next prime is 9933317411. The reversal of 9933317381 is 1837133399.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4958272225 + 4975045156 = 70415^2 + 70534^2 .

It is a cyclic number.

It is not a de Polignac number, because 9933317381 - 2¹⁰ = 9933316357 is a prime.

It is a super-2 number, since 2×9933317381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9933317341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 382050656 + ... + 382050681.

It is an arithmetic number, because the mean of its divisors is an integer number (2674354683).

Almost surely, 2^9933317381 is an apocalyptic number.

It is an amenable number.

9933317381 is a deficient number, since it is larger than the sum of its proper divisors (764101351).

9933317381 is a wasteful number, since it uses less digits than its factorization.

9933317381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764101350.

The product of its digits is 367416, while the sum is 47.

The square root of 9933317381 is about 99666.0292225992. The cubic root of 9933317381 is about 2149.6352278940.

The spelling of 9933317381 in words is "nine billion, nine hundred thirty-three million, three hundred seventeen thousand, three hundred eighty-one".