163238438 has 24 divisors (see below), whose sum is σ = 269819760. Its totient is φ = 74012400.

The previous prime is 163238431. The next prime is 163238441. The reversal of 163238438 is 834832361.

163238438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163238431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152168 + ... + 153236.

It is an arithmetic number, because the mean of its divisors is an integer number (11242490).

Almost surely, 2^163238438 is an apocalyptic number.

163238438 is a deficient number, since it is larger than the sum of its proper divisors (106581322).

163238438 is a wasteful number, since it uses less digits than its factorization.

163238438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1713 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 163238438 is about 12776.4798751456. The cubic root of 163238438 is about 546.5217833545.

The spelling of 163238438 in words is "one hundred sixty-three million, two hundred thirty-eight thousand, four hundred thirty-eight".