1284243682 has 8 divisors (see below), whose sum is σ = 2039681196. Its totient is φ = 604349952.

The previous prime is 1284243673. The next prime is 1284243703. The reversal of 1284243682 is 2863424821.

It can be written as a sum of positive squares in 2 ways, for example, as 1173131001 + 111112681 = 34251^2 + 10541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18885903 + ... + 18885970.

Almost surely, 2^1284243682 is an apocalyptic number.

1284243682 is a deficient number, since it is larger than the sum of its proper divisors (755437514).

1284243682 is a wasteful number, since it uses less digits than its factorization.

1284243682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37771892.

The product of its digits is 147456, while the sum is 40.

The square root of 1284243682 is about 35836.3458237583. The cubic root of 1284243682 is about 1086.9656318980.

The spelling of 1284243682 in words is "one billion, two hundred eighty-four million, two hundred forty-three thousand, six hundred eighty-two".