1338947341 has 2 divisors, whose sum is σ = 1338947342. Its totient is φ = 1338947340.

The previous prime is 1338947333. The next prime is 1338947419. The reversal of 1338947341 is 1437498331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1263518116 + 75429225 = 35546^2 + 8685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1338947341 - 2³ = 1338947333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338947041) 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, 669473670 + 669473671.

It is an arithmetic number, because the mean of its divisors is an integer number (669473671).

Almost surely, 2^1338947341 is an apocalyptic number.

It is an amenable number.

1338947341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338947341 is an equidigital number, since it uses as much as digits as its factorization.

1338947341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 1338947341 is about 36591.6293843278. The cubic root of 1338947341 is about 1102.1850070315.

The spelling of 1338947341 in words is "one billion, three hundred thirty-eight million, nine hundred forty-seven thousand, three hundred forty-one".