5681349645 has 8 divisors (see below), whose sum is σ = 9090159456. Its totient is φ = 3030053136.

The previous prime is 5681349643. The next prime is 5681349649. The reversal of 5681349645 is 5469431865.

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

It is not a de Polignac number, because 5681349645 - 2¹ = 5681349643 is a prime.

It is a super-3 number, since 3×5681349645³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681349643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189378307 + ... + 189378336.

It is an arithmetic number, because the mean of its divisors is an integer number (1136269932).

Almost surely, 2^5681349645 is an apocalyptic number.

It is an amenable number.

5681349645 is a deficient number, since it is larger than the sum of its proper divisors (3408809811).

5681349645 is a wasteful number, since it uses less digits than its factorization.

5681349645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378756651.

The product of its digits is 3110400, while the sum is 51.

The square root of 5681349645 is about 75374.7281587138. The cubic root of 5681349645 is about 1784.3655883252.

The spelling of 5681349645 in words is "five billion, six hundred eighty-one million, three hundred forty-nine thousand, six hundred forty-five".