238218815 has 8 divisors (see below), whose sum is σ = 292835088. Its totient is φ = 185926720.

The previous prime is 238218811. The next prime is 238218817. The reversal of 238218815 is 518812832.

It is a happy number.

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

It is not a de Polignac number, because 238218815 - 2² = 238218811 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 (238218811) 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, 580817 + ... + 581226.

It is an arithmetic number, because the mean of its divisors is an integer number (36604386).

Almost surely, 2^238218815 is an apocalyptic number.

238218815 is a deficient number, since it is larger than the sum of its proper divisors (54616273).

238218815 is a wasteful number, since it uses less digits than its factorization.

238218815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162089.

The product of its digits is 30720, while the sum is 38.

The square root of 238218815 is about 15434.3388261370. The cubic root of 238218815 is about 619.9053055169.

The spelling of 238218815 in words is "two hundred thirty-eight million, two hundred eighteen thousand, eight hundred fifteen".