1916496909401 has 2 divisors, whose sum is σ = 1916496909402. Its totient is φ = 1916496909400.

The previous prime is 1916496909359. The next prime is 1916496909451. The reversal of 1916496909401 is 1049096946191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1916496909376 + 25 = 1384376^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916496909401 - 2³⁰ = 1915423167577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1916496909451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958248454700 + 958248454701.

It is an arithmetic number, because the mean of its divisors is an integer number (958248454701).

Almost surely, 2^{1916496909401} is an apocalyptic number.

It is an amenable number.

1916496909401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916496909401 is an equidigital number, since it uses as much as digits as its factorization.

1916496909401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3779136, while the sum is 59.

The spelling of 1916496909401 in words is "one trillion, nine hundred sixteen billion, four hundred ninety-six million, nine hundred nine thousand, four hundred one".