1338630655 has 8 divisors (see below), whose sum is σ = 1690902000. Its totient is φ = 1014541056.

The previous prime is 1338630637. The next prime is 1338630661. The reversal of 1338630655 is 5560368331.

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

It is a cyclic number.

It is not a de Polignac number, because 1338630655 - 2⁹ = 1338630143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7045330 + ... + 7045519.

It is an arithmetic number, because the mean of its divisors is an integer number (211362750).

Almost surely, 2^1338630655 is an apocalyptic number.

1338630655 is a deficient number, since it is larger than the sum of its proper divisors (352271345).

1338630655 is a wasteful number, since it uses less digits than its factorization.

1338630655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14090873.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 1338630655 is about 36587.3018272734. The cubic root of 1338630655 is about 1102.0981044146.

Adding to 1338630655 its reverse (5560368331), we get a palindrome (6898998986).

The spelling of 1338630655 in words is "one billion, three hundred thirty-eight million, six hundred thirty thousand, six hundred fifty-five".