238363818121 has 16 divisors (see below), whose sum is σ = 280866837888. Its totient is φ = 199431993600.

The previous prime is 238363818107. The next prime is 238363818137. The reversal of 238363818121 is 121818363832.

It is a cyclic number.

It is not a de Polignac number, because 238363818121 - 2¹⁷ = 238363687049 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (238363818191) 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 15 ways as a sum of consecutive naturals, for example, 2424925 + ... + 2521306.

It is an arithmetic number, because the mean of its divisors is an integer number (17554177368).

Almost surely, 2^238363818121 is an apocalyptic number.

It is an amenable number.

238363818121 is a deficient number, since it is larger than the sum of its proper divisors (42503019767).

238363818121 is a wasteful number, since it uses less digits than its factorization.

238363818121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946592.

The product of its digits is 331776, while the sum is 46.

The spelling of 238363818121 in words is "two hundred thirty-eight billion, three hundred sixty-three million, eight hundred eighteen thousand, one hundred twenty-one".