238261191 has 16 divisors (see below), whose sum is σ = 363400704. Its totient is φ = 136023264.

The previous prime is 238261169. The next prime is 238261193. The reversal of 238261191 is 191162832.

It is not a de Polignac number, because 238261191 - 2¹¹ = 238259143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238261193) 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, 21045 + ... + 30321.

It is an arithmetic number, because the mean of its divisors is an integer number (22712544).

Almost surely, 2^238261191 is an apocalyptic number.

238261191 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

238261191 is a deficient number, since it is larger than the sum of its proper divisors (125139513).

238261191 is a wasteful number, since it uses less digits than its factorization.

238261191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10510.

The product of its digits is 5184, while the sum is 33.

The square root of 238261191 is about 15435.7115482248. The cubic root of 238261191 is about 619.9420610096.

The spelling of 238261191 in words is "two hundred thirty-eight million, two hundred sixty-one thousand, one hundred ninety-one".