1338618628 has 24 divisors (see below), whose sum is σ = 2467052000. Its totient is φ = 633780288.

The previous prime is 1338618577. The next prime is 1338618629. The reversal of 1338618628 is 8268168331.

It is not an unprimeable number, because it can be changed into a prime (1338618629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309376 + ... + 313672.

Almost surely, 2^1338618628 is an apocalyptic number.

It is an amenable number.

1338618628 is a deficient number, since it is larger than the sum of its proper divisors (1128433372).

1338618628 is a wasteful number, since it uses less digits than its factorization.

1338618628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419 (or 8417 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 1338618628 is about 36587.1374666016. The cubic root of 1338618628 is about 1102.0948037846.

The spelling of 1338618628 in words is "one billion, three hundred thirty-eight million, six hundred eighteen thousand, six hundred twenty-eight".