1388433309041 has 2 divisors, whose sum is σ = 1388433309042. Its totient is φ = 1388433309040.

The previous prime is 1388433308989. The next prime is 1388433309209. The reversal of 1388433309041 is 1409033348831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1388214150625 + 219158416 = 1178225^2 + 14804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1388433309041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1388433809041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694216654520 + 694216654521.

It is an arithmetic number, because the mean of its divisors is an integer number (694216654521).

Almost surely, 2^{1388433309041} is an apocalyptic number.

It is an amenable number.

1388433309041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388433309041 is an equidigital number, since it uses as much as digits as its factorization.

1388433309041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 1388433309041 in words is "one trillion, three hundred eighty-eight billion, four hundred thirty-three million, three hundred nine thousand, forty-one".