238215663 has 24 divisors (see below), whose sum is σ = 394354688. Its totient is φ = 135739152.

The previous prime is 238215661. The next prime is 238215667. The reversal of 238215663 is 366512832.

It is a happy number.

It is not a de Polignac number, because 238215663 - 2¹ = 238215661 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238215661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17970 + ... + 28272.

Almost surely, 2^238215663 is an apocalyptic number.

238215663 is a deficient number, since it is larger than the sum of its proper divisors (156139025).

238215663 is a wasteful number, since it uses less digits than its factorization.

238215663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683 (or 10680 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 238215663 is about 15434.2367158211. The cubic root of 238215663 is about 619.9025714058.

The spelling of 238215663 in words is "two hundred thirty-eight million, two hundred fifteen thousand, six hundred sixty-three".