1538805940747 has 2 divisors, whose sum is σ = 1538805940748. Its totient is φ = 1538805940746.

The previous prime is 1538805940697. The next prime is 1538805940807. The reversal of 1538805940747 is 7470495088351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1538805940747 - 2¹¹ = 1538805938699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1538805920747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769402970373 + 769402970374.

It is an arithmetic number, because the mean of its divisors is an integer number (769402970374).

Almost surely, 2^{1538805940747} is an apocalyptic number.

1538805940747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538805940747 is an equidigital number, since it uses as much as digits as its factorization.

1538805940747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 1538805940747 in words is "one trillion, five hundred thirty-eight billion, eight hundred five million, nine hundred forty thousand, seven hundred forty-seven".