9437664667349 has 4 divisors (see below), whose sum is σ = 9437681475564. Its totient is φ = 9437647859136.

The previous prime is 9437664667339. The next prime is 9437664667367.

9437664667349 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4017847864849 + 5419816802500 = 2004457^2 + 2328050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9437664667349 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 (9437664667339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7531682 + ... + 8694915.

It is an arithmetic number, because the mean of its divisors is an integer number (2359420368891).

Almost surely, 2^{9437664667349} is an apocalyptic number.

It is an amenable number.

9437664667349 is a deficient number, since it is larger than the sum of its proper divisors (16808215).

9437664667349 is a wasteful number, since it uses less digits than its factorization.

9437664667349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16808214.

The product of its digits is 2962842624, while the sum is 74.

The spelling of 9437664667349 in words is "nine trillion, four hundred thirty-seven billion, six hundred sixty-four million, six hundred sixty-seven thousand, three hundred forty-nine".