1968758478849 has 8 divisors (see below), whose sum is σ = 2625947816992. Its totient is φ = 1312037396640.

The previous prime is 1968758478847. The next prime is 1968758478937. The reversal of 1968758478849 is 9488748578691.

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

It is not a de Polignac number, because 1968758478849 - 2¹ = 1968758478847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968758478847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117054172 + ... + 117070989.

It is an arithmetic number, because the mean of its divisors is an integer number (328243477124).

Almost surely, 2^{1968758478849} is an apocalyptic number.

It is an amenable number.

1968758478849 is a deficient number, since it is larger than the sum of its proper divisors (657189338143).

1968758478849 is a wasteful number, since it uses less digits than its factorization.

1968758478849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234127967.

The product of its digits is 7803371520, while the sum is 84.

The spelling of 1968758478849 in words is "one trillion, nine hundred sixty-eight billion, seven hundred fifty-eight million, four hundred seventy-eight thousand, eight hundred forty-nine".