1282686493 has 4 divisors (see below), whose sum is σ = 1399294368. Its totient is φ = 1166078620.

The previous prime is 1282686487. The next prime is 1282686547. The reversal of 1282686493 is 3946862821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1282686493 - 2¹³ = 1282678301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282686593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58303921 + ... + 58303942.

It is an arithmetic number, because the mean of its divisors is an integer number (349823592).

Almost surely, 2^1282686493 is an apocalyptic number.

It is an amenable number.

1282686493 is a deficient number, since it is larger than the sum of its proper divisors (116607875).

1282686493 is a wasteful number, since it uses less digits than its factorization.

1282686493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116607874.

The product of its digits is 995328, while the sum is 49.

The square root of 1282686493 is about 35814.6128416880. The cubic root of 1282686493 is about 1086.5261266529.

The spelling of 1282686493 in words is "one billion, two hundred eighty-two million, six hundred eighty-six thousand, four hundred ninety-three".