163342438 has 16 divisors (see below), whose sum is σ = 281873664. Its totient is φ = 69539400.

The previous prime is 163342433. The next prime is 163342451. The reversal of 163342438 is 834243361.

163342438 is digitally balanced in base 2 and base 3, because in such bases 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 (163342433) 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, 36520 + ... + 40747.

It is an arithmetic number, because the mean of its divisors is an integer number (17617104).

Almost surely, 2^163342438 is an apocalyptic number.

163342438 is a deficient number, since it is larger than the sum of its proper divisors (118531226).

163342438 is a wasteful number, since it uses less digits than its factorization.

163342438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77427.

The product of its digits is 41472, while the sum is 34.

The square root of 163342438 is about 12780.5492057266. The cubic root of 163342438 is about 546.6378226073.

Adding to 163342438 its reverse (834243361), we get a palindrome (997585799).

The spelling of 163342438 in words is "one hundred sixty-three million, three hundred forty-two thousand, four hundred thirty-eight".