1338649706 has 8 divisors (see below), whose sum is σ = 2008151364. Its totient is φ = 669265920.

The previous prime is 1338649699. The next prime is 1338649721. The reversal of 1338649706 is 6079468331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1277419081 + 61230625 = 35741^2 + 7825^2 .

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

It is a Curzon number.

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, 8936 + ... + 52508.

Almost surely, 2^1338649706 is an apocalyptic number.

1338649706 is a deficient number, since it is larger than the sum of its proper divisors (669501658).

1338649706 is a wasteful number, since it uses less digits than its factorization.

1338649706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58936.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 1338649706 is about 36587.5621762369. The cubic root of 1338649706 is about 1102.1033326358.

The spelling of 1338649706 in words is "one billion, three hundred thirty-eight million, six hundred forty-nine thousand, seven hundred six".