1338045918 has 32 divisors (see below), whose sum is σ = 2920682880. Its totient is φ = 405286560.

The previous prime is 1338045887. The next prime is 1338045923. The reversal of 1338045918 is 8195408331.

It is a self number, because there is not a number n which added to its sum of digits gives 1338045918.

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, 255268 + ... + 260456.

It is an arithmetic number, because the mean of its divisors is an integer number (91271340).

Almost surely, 2^1338045918 is an apocalyptic number.

1338045918 is an abundant number, since it is smaller than the sum of its proper divisors (1582636962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1338045918 is a wasteful number, since it uses less digits than its factorization.

1338045918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9112.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1338045918 is about 36579.3099716219. The cubic root of 1338045918 is about 1101.9376092117.

The spelling of 1338045918 in words is "one billion, three hundred thirty-eight million, forty-five thousand, nine hundred eighteen".