238278806347 has 2 divisors, whose sum is σ = 238278806348. Its totient is φ = 238278806346.

The previous prime is 238278806309. The next prime is 238278806407. The reversal of 238278806347 is 743608872832.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238278806347 is a prime.

It is a super-2 number, since 2×238278806347² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238278806291 and 238278806300.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119139403173 + 119139403174.

It is an arithmetic number, because the mean of its divisors is an integer number (119139403174).

Almost surely, 2^238278806347 is an apocalyptic number.

238278806347 is a deficient number, since it is larger than the sum of its proper divisors (1).

238278806347 is an equidigital number, since it uses as much as digits as its factorization.

238278806347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21676032, while the sum is 58.

The spelling of 238278806347 in words is "two hundred thirty-eight billion, two hundred seventy-eight million, eight hundred six thousand, three hundred forty-seven".