163144340 has 24 divisors (see below), whose sum is σ = 343523040. Its totient is φ = 65082528.

The previous prime is 163144339. The next prime is 163144349. The reversal of 163144340 is 43441361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163144349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (14313460).

Almost surely, 2^163144340 is an apocalyptic number.

163144340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163144340 is an abundant number, since it is smaller than the sum of its proper divisors (180378700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163144340 is a wasteful number, since it uses less digits than its factorization.

163144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21911 (or 21909 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 163144340 is about 12772.7968746082. The cubic root of 163144340 is about 546.4167498994.

The spelling of 163144340 in words is "one hundred sixty-three million, one hundred forty-four thousand, three hundred forty".