11738643841 has 2 divisors, whose sum is σ = 11738643842. Its totient is φ = 11738643840.

The previous prime is 11738643823. The next prime is 11738643863. The reversal of 11738643841 is 14834683711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10773609616 + 965034225 = 103796^2 + 31065^2 .

It is a cyclic number.

It is not a de Polignac number, because 11738643841 - 2²³ = 11730255233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11738643791 and 11738643800.

It is not a weakly prime, because it can be changed into another prime (11738643811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5869321920 + 5869321921.

It is an arithmetic number, because the mean of its divisors is an integer number (5869321921).

Almost surely, 2^11738643841 is an apocalyptic number.

It is an amenable number.

11738643841 is a deficient number, since it is larger than the sum of its proper divisors (1).

11738643841 is an equidigital number, since it uses as much as digits as its factorization.

11738643841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The spelling of 11738643841 in words is "eleven billion, seven hundred thirty-eight million, six hundred forty-three thousand, eight hundred forty-one".