1959405449539 has 2 divisors, whose sum is σ = 1959405449540. Its totient is φ = 1959405449538.

The previous prime is 1959405449501. The next prime is 1959405449543. The reversal of 1959405449539 is 9359445049591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1959405449539 - 2¹⁹ = 1959404925251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1959405449569) 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, 979702724769 + 979702724770.

It is an arithmetic number, because the mean of its divisors is an integer number (979702724770).

Almost surely, 2^{1959405449539} is an apocalyptic number.

1959405449539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1959405449539 is an equidigital number, since it uses as much as digits as its factorization.

1959405449539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464000, while the sum is 67.

The spelling of 1959405449539 in words is "one trillion, nine hundred fifty-nine billion, four hundred five million, four hundred forty-nine thousand, five hundred thirty-nine".