1338782045 has 16 divisors (see below), whose sum is σ = 1775001600. Its totient is φ = 964195584.

The previous prime is 1338782021. The next prime is 1338782083. The reversal of 1338782045 is 5402878331.

It is a cyclic number.

It is not a de Polignac number, because 1338782045 - 2²⁶ = 1271673181 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1338781993 and 1338782011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340445 + ... + 344354.

It is an arithmetic number, because the mean of its divisors is an integer number (110937600).

Almost surely, 2^1338782045 is an apocalyptic number.

It is an amenable number.

1338782045 is a deficient number, since it is larger than the sum of its proper divisors (436219555).

1338782045 is a wasteful number, since it uses less digits than its factorization.

1338782045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684844.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 1338782045 is about 36589.3706559706. The cubic root of 1338782045 is about 1102.1396494422.

The spelling of 1338782045 in words is "one billion, three hundred thirty-eight million, seven hundred eighty-two thousand, forty-five".