9387643613 has 4 divisors (see below), whose sum is σ = 9478785888. Its totient is φ = 9296501340.

The previous prime is 9387643583. The next prime is 9387643619. The reversal of 9387643613 is 3163467839.

It is a happy number.

9387643613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3163467839 = 7 ⋅451923977.

It is a cyclic number.

It is not a de Polignac number, because 9387643613 - 2¹⁶ = 9387578077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9387643619) 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 3 ways as a sum of consecutive naturals, for example, 45570983 + ... + 45571188.

It is an arithmetic number, because the mean of its divisors is an integer number (2369696472).

Almost surely, 2^9387643613 is an apocalyptic number.

It is an amenable number.

9387643613 is a deficient number, since it is larger than the sum of its proper divisors (91142275).

9387643613 is a wasteful number, since it uses less digits than its factorization.

9387643613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91142274.

The product of its digits is 1959552, while the sum is 50.

The square root of 9387643613 is about 96889.8529929734. The cubic root of 9387643613 is about 2109.5291517678.

The spelling of 9387643613 in words is "nine billion, three hundred eighty-seven million, six hundred forty-three thousand, six hundred thirteen".