238125991 has 8 divisors (see below), whose sum is σ = 244231344. Its totient is φ = 232034880.

The previous prime is 238125971. The next prime is 238126013. The reversal of 238125991 is 199521832.

238125991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238125991 - 2⁹ = 238125479 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 (238125971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35761 + ... + 41893.

It is an arithmetic number, because the mean of its divisors is an integer number (30528918).

Almost surely, 2^238125991 is an apocalyptic number.

238125991 is a deficient number, since it is larger than the sum of its proper divisors (6105353).

238125991 is an equidigital number, since it uses as much as digits as its factorization.

238125991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121.

The product of its digits is 38880, while the sum is 40.

The square root of 238125991 is about 15431.3314720409. The cubic root of 238125991 is about 619.8247779208.

The spelling of 238125991 in words is "two hundred thirty-eight million, one hundred twenty-five thousand, nine hundred ninety-one".