1006919108781 has 8 divisors (see below), whose sum is σ = 1349305339200. Its totient is φ = 667906142112.

The previous prime is 1006919108761. The next prime is 1006919108813. The reversal of 1006919108781 is 1878019196001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1006919108781 - 2⁶ = 1006919108717 is a prime.

It is a super-2 number, since 2×1006919108781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006919108761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843315240 + ... + 843316433.

It is an arithmetic number, because the mean of its divisors is an integer number (168663167400).

Almost surely, 2^{1006919108781} is an apocalyptic number.

It is an amenable number.

1006919108781 is a deficient number, since it is larger than the sum of its proper divisors (342386230419).

1006919108781 is a wasteful number, since it uses less digits than its factorization.

1006919108781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686631875.

The product of its (nonzero) digits is 217728, while the sum is 51.

The spelling of 1006919108781 in words is "one trillion, six billion, nine hundred nineteen million, one hundred eight thousand, seven hundred eighty-one".