238966478309 has 16 divisors (see below), whose sum is σ = 270316026624. Its totient is φ = 209596464000.

The previous prime is 238966478297. The next prime is 238966478321. The reversal of 238966478309 is 903874669832.

It is an interprime number because it is at equal distance from previous prime (238966478297) and next prime (238966478321).

It is a cyclic number.

It is not a de Polignac number, because 238966478309 - 2⁴ = 238966478293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238966478389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2601272 + ... + 2691569.

It is an arithmetic number, because the mean of its divisors is an integer number (16894751664).

Almost surely, 2^238966478309 is an apocalyptic number.

It is an amenable number.

238966478309 is a deficient number, since it is larger than the sum of its proper divisors (31349548315).

238966478309 is a wasteful number, since it uses less digits than its factorization.

238966478309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293028.

The product of its (nonzero) digits is 94058496, while the sum is 65.

The spelling of 238966478309 in words is "two hundred thirty-eight billion, nine hundred sixty-six million, four hundred seventy-eight thousand, three hundred nine".