238533538243 has 16 divisors (see below), whose sum is σ = 320268807936. Its totient is φ = 171572574240.

The previous prime is 238533538189. The next prime is 238533538261. The reversal of 238533538243 is 342835335832.

It is a cyclic number.

It is not a de Polignac number, because 238533538243 - 2¹³ = 238533530051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238533533243) 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, 119146621 + ... + 119148622.

It is an arithmetic number, because the mean of its divisors is an integer number (20016800496).

Almost surely, 2^238533538243 is an apocalyptic number.

238533538243 is a deficient number, since it is larger than the sum of its proper divisors (81735269693).

238533538243 is a wasteful number, since it uses less digits than its factorization.

238533538243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238295274.

The product of its digits is 6220800, while the sum is 49.

The spelling of 238533538243 in words is "two hundred thirty-eight billion, five hundred thirty-three million, five hundred thirty-eight thousand, two hundred forty-three".