238281378351 has 4 divisors (see below), whose sum is σ = 317708504472. Its totient is φ = 158854252232.

The previous prime is 238281378331. The next prime is 238281378359. The reversal of 238281378351 is 153873182832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238281378351 - 2¹⁵ = 238281345583 is a prime.

It is a super-4 number, since 4×238281378351⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 238281378294 and 238281378303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238281378359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39713563056 + ... + 39713563061.

It is an arithmetic number, because the mean of its divisors is an integer number (79427126118).

Almost surely, 2^238281378351 is an apocalyptic number.

238281378351 is a deficient number, since it is larger than the sum of its proper divisors (79427126121).

238281378351 is an equidigital number, since it uses as much as digits as its factorization.

238281378351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79427126120.

The product of its digits is 1935360, while the sum is 51.

The spelling of 238281378351 in words is "two hundred thirty-eight billion, two hundred eighty-one million, three hundred seventy-eight thousand, three hundred fifty-one".