283563493 has 2 divisors, whose sum is σ = 283563494. Its totient is φ = 283563492.

The previous prime is 283563491. The next prime is 283563521. The reversal of 283563493 is 394365382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256544289 + 27019204 = 16017^2 + 5198^2 .

It is a cyclic number.

It is not a de Polignac number, because 283563493 - 2¹ = 283563491 is a prime.

It is a super-2 number, since 2×283563493² = 160816509124722098, which contains 22 as substring.

Together with 283563491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (283563491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141781746 + 141781747.

It is an arithmetic number, because the mean of its divisors is an integer number (141781747).

Almost surely, 2^283563493 is an apocalyptic number.

It is an amenable number.

283563493 is a deficient number, since it is larger than the sum of its proper divisors (1).

283563493 is an equidigital number, since it uses as much as digits as its factorization.

283563493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 43.

The square root of 283563493 is about 16839.3436035969. The cubic root of 283563493 is about 656.9769094404.

The spelling of 283563493 in words is "two hundred eighty-three million, five hundred sixty-three thousand, four hundred ninety-three".