378689821298 has 8 divisors (see below), whose sum is σ = 568719939180. Its totient is φ = 189116508240.

The previous prime is 378689821267. The next prime is 378689821309. The reversal of 378689821298 is 892128986873.

It can be written as a sum of positive squares in 2 ways, for example, as 336292128649 + 42397692649 = 579907^2 + 205907^2 .

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

It is a super-2 number, since 2×378689821298² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114199133 + ... + 114202448.

Almost surely, 2^378689821298 is an apocalyptic number.

378689821298 is a deficient number, since it is larger than the sum of its proper divisors (190030117882).

378689821298 is a wasteful number, since it uses less digits than its factorization.

378689821298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228402412.

The product of its digits is 167215104, while the sum is 71.

The spelling of 378689821298 in words is "three hundred seventy-eight billion, six hundred eighty-nine million, eight hundred twenty-one thousand, two hundred ninety-eight".