945643346549 has 12 divisors (see below), whose sum is σ = 1051105115340. Its totient is φ = 850016481600.

The previous prime is 945643346539. The next prime is 945643346563.

945643346549 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 382348065649 + 563295280900 = 618343^2 + 750530^2 .

It is not a de Polignac number, because 945643346549 - 2³⁶ = 876923869813 is a prime.

It is a super-2 number, since 2×945643346549² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 945643346491 and 945643346500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945643346539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43895042 + ... + 43916579.

It is an arithmetic number, because the mean of its divisors is an integer number (87592092945).

Almost surely, 2^945643346549 is an apocalyptic number.

It is an amenable number.

945643346549 is a deficient number, since it is larger than the sum of its proper divisors (105461768791).

945643346549 is a wasteful number, since it uses less digits than its factorization.

945643346549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87811732 (or 87811721 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 62.

The spelling of 945643346549 in words is "nine hundred forty-five billion, six hundred forty-three million, three hundred forty-six thousand, five hundred forty-nine".