1001001000019 has 2 divisors, whose sum is σ = 1001001000020. Its totient is φ = 1001001000018.

The previous prime is 1001000999987. The next prime is 1001001000037. The reversal of 1001001000019 is 9100001001001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001001000019 - 2⁵ = 1001000999987 is a prime.

It is a super-2 number, since 2×1001001000019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001000999972 and 1001001000008.

It is not a weakly prime, because it can be changed into another prime (1001071000019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500500009 + 500500500010.

It is an arithmetic number, because the mean of its divisors is an integer number (500500500010).

Almost surely, 2^{1001001000019} is an apocalyptic number.

1001001000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001001000019 is an equidigital number, since it uses as much as digits as its factorization.

1001001000019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 13.

The spelling of 1001001000019 in words is "one trillion, one billion, one million, nineteen", and thus it is an aban number and an uban number.