1916672892709 has 8 divisors (see below), whose sum is σ = 2030196256920. Its totient is φ = 1803235961856.

The previous prime is 1916672892703. The next prime is 1916672892727. The reversal of 1916672892709 is 9072982766191.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 528270219684 + 1388402673025 = 726822^2 + 1178305^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1916672892709 - 2⁷ = 1916672892581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916672892703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21562674 + ... + 21651379.

It is an arithmetic number, because the mean of its divisors is an integer number (253774532115).

Almost surely, 2^{1916672892709} is an apocalyptic number.

It is an amenable number.

1916672892709 is a deficient number, since it is larger than the sum of its proper divisors (113523364211).

1916672892709 is a wasteful number, since it uses less digits than its factorization.

1916672892709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43216679.

The product of its (nonzero) digits is 41150592, while the sum is 67.

The spelling of 1916672892709 in words is "one trillion, nine hundred sixteen billion, six hundred seventy-two million, eight hundred ninety-two thousand, seven hundred nine".