163397444 has 24 divisors (see below), whose sum is σ = 328516608. Its totient is φ = 69658560.

The previous prime is 163397413. The next prime is 163397447. The reversal of 163397444 is 444793361.

It is not an unprimeable number, because it can be changed into a prime (163397447) 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, 9929 + ... + 20624.

It is an arithmetic number, because the mean of its divisors is an integer number (13688192).

Almost surely, 2^163397444 is an apocalyptic number.

163397444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

163397444 is an abundant number, since it is smaller than the sum of its proper divisors (165119164).

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

163397444 is a wasteful number, since it uses less digits than its factorization.

163397444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30755 (or 30753 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 163397444 is about 12782.7009665407. The cubic root of 163397444 is about 546.6991763005.

The spelling of 163397444 in words is "one hundred sixty-three million, three hundred ninety-seven thousand, four hundred forty-four".