1001668508419 has 2 divisors, whose sum is σ = 1001668508420. Its totient is φ = 1001668508418.

The previous prime is 1001668508327. The next prime is 1001668508429. The reversal of 1001668508419 is 9148058661001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001668508419 - 2³¹ = 999521024771 is a prime.

It is a super-2 number, since 2×1001668508419² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001668508429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500834254209 + 500834254210.

It is an arithmetic number, because the mean of its divisors is an integer number (500834254210).

Almost surely, 2^{1001668508419} is an apocalyptic number.

1001668508419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001668508419 is an equidigital number, since it uses as much as digits as its factorization.

1001668508419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 1001668508419 in words is "one trillion, one billion, six hundred sixty-eight million, five hundred eight thousand, four hundred nineteen".