238661187163 has 16 divisors (see below), whose sum is σ = 285411137536. Its totient is φ = 195255904320.

The previous prime is 238661187067. The next prime is 238661187169. The reversal of 238661187163 is 361781166832.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 238661187163 - 2⁹ = 238661186651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238661187163.

It is not an unprimeable number, because it can be changed into a prime (238661187169) 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, 7517181 + ... + 7548862.

It is an arithmetic number, because the mean of its divisors is an integer number (17838196096).

Almost surely, 2^238661187163 is an apocalyptic number.

238661187163 is a deficient number, since it is larger than the sum of its proper divisors (46749950373).

238661187163 is a wasteful number, since it uses less digits than its factorization.

238661187163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15066154.

The product of its digits is 1741824, while the sum is 52.

The spelling of 238661187163 in words is "two hundred thirty-eight billion, six hundred sixty-one million, one hundred eighty-seven thousand, one hundred sixty-three".