1338618605 has 16 divisors (see below), whose sum is σ = 1628895744. Its totient is φ = 1055910720.

The previous prime is 1338618577. The next prime is 1338618629. The reversal of 1338618605 is 5068168331.

It is not a de Polignac number, because 1338618605 - 2²⁰ = 1337570029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228260 + ... + 234050.

It is an arithmetic number, because the mean of its divisors is an integer number (101805984).

Almost surely, 2^1338618605 is an apocalyptic number.

It is an amenable number.

1338618605 is a deficient number, since it is larger than the sum of its proper divisors (290277139).

1338618605 is an equidigital number, since it uses as much as digits as its factorization.

1338618605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1338618605 is about 36587.1371522835. The cubic root of 1338618605 is about 1102.0947974726.

The spelling of 1338618605 in words is "one billion, three hundred thirty-eight million, six hundred eighteen thousand, six hundred five".