9381663249 has 32 divisors (see below), whose sum is σ = 14545981440. Its totient is φ = 5267808000.

The previous prime is 9381663233. The next prime is 9381663253. The reversal of 9381663249 is 9423661839.

It is not a de Polignac number, because 9381663249 - 2⁴ = 9381663233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9381663209) 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, 336649 + ... + 363449.

It is an arithmetic number, because the mean of its divisors is an integer number (454561920).

Almost surely, 2^9381663249 is an apocalyptic number.

It is an amenable number.

9381663249 is a deficient number, since it is larger than the sum of its proper divisors (5164318191).

9381663249 is a wasteful number, since it uses less digits than its factorization.

9381663249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101.

The product of its digits is 1679616, while the sum is 51.

The square root of 9381663249 is about 96858.9864132389. The cubic root of 9381663249 is about 2109.0811006698.

The spelling of 9381663249 in words is "nine billion, three hundred eighty-one million, six hundred sixty-three thousand, two hundred forty-nine".