19091414081 has 2 divisors, whose sum is σ = 19091414082. Its totient is φ = 19091414080.

The previous prime is 19091414033. The next prime is 19091414099. The reversal of 19091414081 is 18041419091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10845139600 + 8246274481 = 104140^2 + 90809^2 .

It is a cyclic number.

It is not a de Polignac number, because 19091414081 - 2¹⁰ = 19091413057 is a prime.

It is a super-2 number, since 2×19091414081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19091411081) 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, 9545707040 + 9545707041.

It is an arithmetic number, because the mean of its divisors is an integer number (9545707041).

Almost surely, 2^19091414081 is an apocalyptic number.

It is an amenable number.

19091414081 is a deficient number, since it is larger than the sum of its proper divisors (1).

19091414081 is an equidigital number, since it uses as much as digits as its factorization.

19091414081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 19091414081 in words is "nineteen billion, ninety-one million, four hundred fourteen thousand, eighty-one".