19008642901 has 2 divisors, whose sum is σ = 19008642902. Its totient is φ = 19008642900.

The previous prime is 19008642707. The next prime is 19008642941. The reversal of 19008642901 is 10924680091.

It is an a-pointer prime, because the next prime (19008642941) can be obtained adding 19008642901 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9895076676 + 9113566225 = 99474^2 + 95465^2 .

It is a cyclic number.

It is not a de Polignac number, because 19008642901 - 2²⁷ = 18874425173 is a prime.

It is a super-2 number, since 2×19008642901² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19008642941) 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, 9504321450 + 9504321451.

It is an arithmetic number, because the mean of its divisors is an integer number (9504321451).

Almost surely, 2^19008642901 is an apocalyptic number.

It is an amenable number.

19008642901 is a deficient number, since it is larger than the sum of its proper divisors (1).

19008642901 is an equidigital number, since it uses as much as digits as its factorization.

19008642901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 19008642901 in words is "nineteen billion, eight million, six hundred forty-two thousand, nine hundred one".