238891113 has 42 divisors (see below), whose sum is σ = 368579274. Its totient is φ = 154734624.

The previous prime is 238891111. The next prime is 238891127. The reversal of 238891113 is 311198832.

238891113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 209438784 + 29452329 = 14472^2 + 5427^2 .

It is not a de Polignac number, because 238891113 - 2¹ = 238891111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238891111) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 3272445 + ... + 3272517.

It is an arithmetic number, because the mean of its divisors is an integer number (8775697).

Almost surely, 2^238891113 is an apocalyptic number.

It is an amenable number.

238891113 is a deficient number, since it is larger than the sum of its proper divisors (129688161).

238891113 is an frugal number, since it uses more digits than its factorization.

238891113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 143 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 238891113 is about 15456.1027752794. The cubic root of 238891113 is about 620.4879206383.

The spelling of 238891113 in words is "two hundred thirty-eight million, eight hundred ninety-one thousand, one hundred thirteen".