1916196574009 has 2 divisors, whose sum is σ = 1916196574010. Its totient is φ = 1916196574008.

The previous prime is 1916196573911. The next prime is 1916196574021. The reversal of 1916196574009 is 9004756916191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1802381430784 + 113815143225 = 1342528^2 + 337365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916196574009 - 2¹³ = 1916196565817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1916190574009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958098287004 + 958098287005.

It is an arithmetic number, because the mean of its divisors is an integer number (958098287005).

Almost surely, 2^{1916196574009} is an apocalyptic number.

It is an amenable number.

1916196574009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916196574009 is an equidigital number, since it uses as much as digits as its factorization.

1916196574009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 58.

The spelling of 1916196574009 in words is "one trillion, nine hundred sixteen billion, one hundred ninety-six million, five hundred seventy-four thousand, nine".