1338681007 has 2 divisors, whose sum is σ = 1338681008. Its totient is φ = 1338681006.

The previous prime is 1338680933. The next prime is 1338681041. The reversal of 1338681007 is 7001868331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1338681007 - 2¹⁵ = 1338648239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338681107) by changing a digit.

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 as a sum of consecutive naturals, namely, 669340503 + 669340504.

It is an arithmetic number, because the mean of its divisors is an integer number (669340504).

Almost surely, 2^1338681007 is an apocalyptic number.

1338681007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338681007 is an equidigital number, since it uses as much as digits as its factorization.

1338681007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1338681007 is about 36587.9899283904. The cubic root of 1338681007 is about 1102.1119225523. Note that the first 3 decimals are identical.

The spelling of 1338681007 in words is "one billion, three hundred thirty-eight million, six hundred eighty-one thousand, seven".