238278806407 has 2 divisors, whose sum is σ = 238278806408. Its totient is φ = 238278806406.

The previous prime is 238278806347. The next prime is 238278806453. The reversal of 238278806407 is 704608872832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238278806407 - 2¹¹ = 238278804359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238278800407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119139403203 + 119139403204.

It is an arithmetic number, because the mean of its divisors is an integer number (119139403204).

Almost surely, 2^238278806407 is an apocalyptic number.

238278806407 is a deficient number, since it is larger than the sum of its proper divisors (1).

238278806407 is an equidigital number, since it uses as much as digits as its factorization.

238278806407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 238278806407 in words is "two hundred thirty-eight billion, two hundred seventy-eight million, eight hundred six thousand, four hundred seven".