1968334849538 has 16 divisors (see below), whose sum is σ = 3138065504640. Its totient is φ = 922753260096.

The previous prime is 1968334849531. The next prime is 1968334849543. The reversal of 1968334849538 is 8359484338691.

It is not an unprimeable number, because it can be changed into a prime (1968334849531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110052278 + ... + 110070161.

It is an arithmetic number, because the mean of its divisors is an integer number (196129094040).

Almost surely, 2^{1968334849538} is an apocalyptic number.

1968334849538 is a deficient number, since it is larger than the sum of its proper divisors (1169730655102).

1968334849538 is a wasteful number, since it uses less digits than its factorization.

1968334849538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220122721.

The product of its digits is 537477120, while the sum is 71.

The spelling of 1968334849538 in words is "one trillion, nine hundred sixty-eight billion, three hundred thirty-four million, eight hundred forty-nine thousand, five hundred thirty-eight".