9381642749 has 8 divisors (see below), whose sum is σ = 9910562880. Its totient is φ = 8856237600.

The previous prime is 9381642733. The next prime is 9381642757. The reversal of 9381642749 is 9472461839.

9381642749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9381642749 - 2⁴ = 9381642733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9381642749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9381642719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873257 + ... + 883934.

It is an arithmetic number, because the mean of its divisors is an integer number (1238820360).

Almost surely, 2^9381642749 is an apocalyptic number.

It is an amenable number.

9381642749 is a deficient number, since it is larger than the sum of its proper divisors (528920131).

9381642749 is a wasteful number, since it uses less digits than its factorization.

9381642749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757491.

The product of its digits is 2612736, while the sum is 53.

The square root of 9381642749 is about 96858.8805892366. The cubic root of 9381642749 is about 2109.0795644747.

The spelling of 9381642749 in words is "nine billion, three hundred eighty-one million, six hundred forty-two thousand, seven hundred forty-nine".