19061083661 has 2 divisors, whose sum is σ = 19061083662. Its totient is φ = 19061083660.

The previous prime is 19061083627. The next prime is 19061083669. The reversal of 19061083661 is 16638016091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13157466436 + 5903617225 = 114706^2 + 76835^2 .

It is an emirp because it is prime and its reverse (16638016091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19061083661 - 2⁶ = 19061083597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19061083669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9530541830 + 9530541831.

It is an arithmetic number, because the mean of its divisors is an integer number (9530541831).

Almost surely, 2^19061083661 is an apocalyptic number.

It is an amenable number.

19061083661 is a deficient number, since it is larger than the sum of its proper divisors (1).

19061083661 is an equidigital number, since it uses as much as digits as its factorization.

19061083661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 19061083661 in words is "nineteen billion, sixty-one million, eighty-three thousand, six hundred sixty-one".