19071186061 has 2 divisors, whose sum is σ = 19071186062. Its totient is φ = 19071186060.

The previous prime is 19071186053. The next prime is 19071186067. The reversal of 19071186061 is 16068117091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18071424900 + 999761161 = 134430^2 + 31619^2 .

It is a cyclic number.

It is not a de Polignac number, because 19071186061 - 2³ = 19071186053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19071186067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9535593030 + 9535593031.

It is an arithmetic number, because the mean of its divisors is an integer number (9535593031).

Almost surely, 2^19071186061 is an apocalyptic number.

It is an amenable number.

19071186061 is a deficient number, since it is larger than the sum of its proper divisors (1).

19071186061 is an equidigital number, since it uses as much as digits as its factorization.

19071186061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 19071186061 in words is "nineteen billion, seventy-one million, one hundred eighty-six thousand, sixty-one".