493678481 has 2 divisors, whose sum is σ = 493678482. Its totient is φ = 493678480.

The previous prime is 493678447. The next prime is 493678483. The reversal of 493678481 is 184876394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253924225 + 239754256 = 15935^2 + 15484^2 .

It is a cyclic number.

It is not a de Polignac number, because 493678481 - 2¹⁸ = 493416337 is a prime.

It is a super-2 number, since 2×493678481² = 487436885204934722, which contains 22 as substring.

Together with 493678483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (493678483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246839240 + 246839241.

It is an arithmetic number, because the mean of its divisors is an integer number (246839241).

Almost surely, 2^493678481 is an apocalyptic number.

It is an amenable number.

493678481 is a deficient number, since it is larger than the sum of its proper divisors (1).

493678481 is an equidigital number, since it uses as much as digits as its factorization.

493678481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 493678481 is about 22218.8766817767. The cubic root of 493678481 is about 790.3414008044.

The spelling of 493678481 in words is "four hundred ninety-three million, six hundred seventy-eight thousand, four hundred eighty-one".