9933657243 has 32 divisors (see below), whose sum is σ = 14990717952. Its totient is φ = 5816448000.

The previous prime is 9933657241. The next prime is 9933657257. The reversal of 9933657243 is 3427563399.

It is a happy number.

It is not a de Polignac number, because 9933657243 - 2¹ = 9933657241 is a prime.

It is a super-2 number, since 2×9933657243² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (9933657241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55183 + ... + 151368.

It is an arithmetic number, because the mean of its divisors is an integer number (468459936).

Almost surely, 2^9933657243 is an apocalyptic number.

9933657243 is a deficient number, since it is larger than the sum of its proper divisors (5057060709).

9933657243 is a wasteful number, since it uses less digits than its factorization.

9933657243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206635.

The product of its digits is 3674160, while the sum is 51.

The square root of 9933657243 is about 99667.7342122314. The cubic root of 9933657243 is about 2149.6597437386.

The spelling of 9933657243 in words is "nine billion, nine hundred thirty-three million, six hundred fifty-seven thousand, two hundred forty-three".