163113444 has 72 divisors (see below), whose sum is σ = 458395392. Its totient is φ = 48565440.

The previous prime is 163113421. The next prime is 163113473. The reversal of 163113444 is 444311361.

163113444 is a `hidden beast` number, since 1 + 6 + 311 + 344 + 4 = 666.

It is a super-2 number, since 2×163113444² = 53211991227082272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8887 + ... + 20129.

Almost surely, 2^163113444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163113444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229197696).

163113444 is an abundant number, since it is smaller than the sum of its proper divisors (295281948).

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

163113444 is a wasteful number, since it uses less digits than its factorization.

163113444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11297 (or 11292 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 163113444 is about 12771.5873719753. The cubic root of 163113444 is about 546.3822545608.

The spelling of 163113444 in words is "one hundred sixty-three million, one hundred thirteen thousand, four hundred forty-four".