1579198231409 has 2 divisors, whose sum is σ = 1579198231410. Its totient is φ = 1579198231408.

The previous prime is 1579198231379. The next prime is 1579198231411. The reversal of 1579198231409 is 9041328919751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903108102400 + 676090129009 = 950320^2 + 822247^2 .

It is a cyclic number.

It is not a de Polignac number, because 1579198231409 - 2⁸ = 1579198231153 is a prime.

Together with 1579198231411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1579198231469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 789599115704 + 789599115705.

It is an arithmetic number, because the mean of its divisors is an integer number (789599115705).

Almost surely, 2^{1579198231409} is an apocalyptic number.

It is an amenable number.

1579198231409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1579198231409 is an equidigital number, since it uses as much as digits as its factorization.

1579198231409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 1579198231409 in words is "one trillion, five hundred seventy-nine billion, one hundred ninety-eight million, two hundred thirty-one thousand, four hundred nine".