1283968634 has 8 divisors (see below), whose sum is σ = 2074103220. Its totient is φ = 592600896.

The previous prime is 1283968577. The next prime is 1283968667. The reversal of 1283968634 is 4368693821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1003305625 + 280663009 = 31675^2 + 16753^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24691679 + ... + 24691730.

Almost surely, 2^1283968634 is an apocalyptic number.

1283968634 is a deficient number, since it is larger than the sum of its proper divisors (790134586).

1283968634 is a wasteful number, since it uses less digits than its factorization.

1283968634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49383424.

The product of its digits is 1492992, while the sum is 50.

The square root of 1283968634 is about 35832.5080618145. The cubic root of 1283968634 is about 1086.8880274492. Note that the first 3 decimals are identical.

The spelling of 1283968634 in words is "one billion, two hundred eighty-three million, nine hundred sixty-eight thousand, six hundred thirty-four".