9394737649 has 16 divisors (see below), whose sum is σ = 10291691520. Its totient is φ = 8505015760.

The previous prime is 9394737647. The next prime is 9394737697. The reversal of 9394737649 is 9467374939.

It is a cyclic number.

It is not a de Polignac number, because 9394737649 - 2¹ = 9394737647 is a prime.

It is a super-2 number, since 2×9394737649² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9394737647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2964864 + ... + 2968030.

It is an arithmetic number, because the mean of its divisors is an integer number (643230720).

Almost surely, 2^9394737649 is an apocalyptic number.

It is an amenable number.

9394737649 is a deficient number, since it is larger than the sum of its proper divisors (896953871).

9394737649 is a wasteful number, since it uses less digits than its factorization.

9394737649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220.

The product of its digits is 30862944, while the sum is 61.

The square root of 9394737649 is about 96926.4548459294. The cubic root of 9394737649 is about 2110.0603929166.

The spelling of 9394737649 in words is "nine billion, three hundred ninety-four million, seven hundred thirty-seven thousand, six hundred forty-nine".