1916158492868 has 6 divisors (see below), whose sum is σ = 3353277362526. Its totient is φ = 958079246432.

The previous prime is 1916158492819. The next prime is 1916158492873. The reversal of 1916158492868 is 8682948516191.

It can be written as a sum of positive squares in only one way, i.e., 1814064184384 + 102094308484 = 1346872^2 + 319522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1916158492798 and 1916158492807.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 239519811605 + ... + 239519811612.

It is an arithmetic number, because the mean of its divisors is an integer number (558879560421).

Almost surely, 2^{1916158492868} is an apocalyptic number.

It is an amenable number.

1916158492868 is a deficient number, since it is larger than the sum of its proper divisors (1437118869658).

1916158492868 is a wasteful number, since it uses less digits than its factorization.

1916158492868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479039623221 (or 479039623219 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 68.

The spelling of 1916158492868 in words is "one trillion, nine hundred sixteen billion, one hundred fifty-eight million, four hundred ninety-two thousand, eight hundred sixty-eight".