238238819 has 32 divisors (see below), whose sum is σ = 303623040. Its totient is φ = 181896192.

The previous prime is 238238789. The next prime is 238238837. The reversal of 238238819 is 918832832.

It is a cyclic number.

It is not a de Polignac number, because 238238819 - 2⁸ = 238238563 is a prime.

It is a super-2 number, since 2×238238819² = 113515469757029522, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 238238819.

It is not an unprimeable number, because it can be changed into a prime (238238839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 582287 + ... + 582695.

It is an arithmetic number, because the mean of its divisors is an integer number (9488220).

Almost surely, 2^238238819 is an apocalyptic number.

238238819 is a deficient number, since it is larger than the sum of its proper divisors (65384221).

238238819 is a wasteful number, since it uses less digits than its factorization.

238238819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its digits is 165888, while the sum is 44.

The square root of 238238819 is about 15434.9868480670. The cubic root of 238238819 is about 619.9226568453.

The spelling of 238238819 in words is "two hundred thirty-eight million, two hundred thirty-eight thousand, eight hundred nineteen".