19103061617 has 2 divisors, whose sum is σ = 19103061618. Its totient is φ = 19103061616.

The previous prime is 19103061589. The next prime is 19103061623. The reversal of 19103061617 is 71616030191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15504981361 + 3598080256 = 124519^2 + 59984^2 .

It is a cyclic number.

It is not a de Polignac number, because 19103061617 - 2⁶ = 19103061553 is a prime.

It is not a weakly prime, because it can be changed into another prime (19103061647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9551530808 + 9551530809.

It is an arithmetic number, because the mean of its divisors is an integer number (9551530809).

Almost surely, 2^19103061617 is an apocalyptic number.

It is an amenable number.

19103061617 is a deficient number, since it is larger than the sum of its proper divisors (1).

19103061617 is an equidigital number, since it uses as much as digits as its factorization.

19103061617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 19103061617 in words is "nineteen billion, one hundred three million, sixty-one thousand, six hundred seventeen".