493293681 has 6 divisors (see below), whose sum is σ = 712535330. Its totient is φ = 328862448.

The previous prime is 493293679. The next prime is 493293707. The reversal of 493293681 is 186392394.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 316270656 + 177023025 = 17784^2 + 13305^2 .

It is not a de Polignac number, because 493293681 - 2¹ = 493293679 is a prime.

It is a super-2 number, since 2×493293681² = 486677311429059522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493293611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27405196 + ... + 27405213.

Almost surely, 2^493293681 is an apocalyptic number.

It is an amenable number.

493293681 is a deficient number, since it is larger than the sum of its proper divisors (219241649).

493293681 is a wasteful number, since it uses less digits than its factorization.

493293681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54810415 (or 54810412 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 493293681 is about 22210.2156900828. The cubic root of 493293681 is about 790.1360023289.

The spelling of 493293681 in words is "four hundred ninety-three million, two hundred ninety-three thousand, six hundred eighty-one".