378196711889 has 4 divisors (see below), whose sum is σ = 378198127524. Its totient is φ = 378195296256.

The previous prime is 378196711859. The next prime is 378196711891. The reversal of 378196711889 is 988117691873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988117691873 = 13 ⋅76009053221.

It can be written as a sum of positive squares in 2 ways, for example, as 101883532864 + 276313179025 = 319192^2 + 525655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378196711889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378196711819) 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 3 ways as a sum of consecutive naturals, for example, 171752 + ... + 886505.

It is an arithmetic number, because the mean of its divisors is an integer number (94549531881).

Almost surely, 2^378196711889 is an apocalyptic number.

It is an amenable number.

378196711889 is a deficient number, since it is larger than the sum of its proper divisors (1415635).

378196711889 is a wasteful number, since it uses less digits than its factorization.

378196711889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415634.

The product of its digits is 36578304, while the sum is 68.

The spelling of 378196711889 in words is "three hundred seventy-eight billion, one hundred ninety-six million, seven hundred eleven thousand, eight hundred eighty-nine".