5493973581 has 16 divisors (see below), whose sum is σ = 8193128320. Its totient is φ = 3638390400.

The previous prime is 5493973577. The next prime is 5493973603. The reversal of 5493973581 is 1853793945.

5493973581 is a `hidden beast` number, since 5 + 493 + 9 + 73 + 5 + 81 = 666.

It is not a de Polignac number, because 5493973581 - 2² = 5493973577 is a prime.

It is a super-2 number, since 2×5493973581² = 60367491417451927122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5493973531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669700 + ... + 677853.

It is an arithmetic number, because the mean of its divisors is an integer number (512070520).

Almost surely, 2^5493973581 is an apocalyptic number.

It is an amenable number.

5493973581 is a deficient number, since it is larger than the sum of its proper divisors (2699154739).

5493973581 is a wasteful number, since it uses less digits than its factorization.

5493973581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347713 (or 1347707 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 5493973581 is about 74121.3436265156. The cubic root of 5493973581 is about 1764.5292242213.

The spelling of 5493973581 in words is "five billion, four hundred ninety-three million, nine hundred seventy-three thousand, five hundred eighty-one".