163883478 has 64 divisors (see below), whose sum is σ = 371879424. Its totient is φ = 47712000.

The previous prime is 163883459. The next prime is 163883479. The reversal of 163883478 is 874388361.

163883478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163883478² = 53715588722752968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163883479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191700 + ... + 192552.

It is an arithmetic number, because the mean of its divisors is an integer number (5810616).

Almost surely, 2^163883478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163883478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185939712).

163883478 is an abundant number, since it is smaller than the sum of its proper divisors (207995946).

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

163883478 is a wasteful number, since it uses less digits than its factorization.

163883478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its digits is 774144, while the sum is 48.

The square root of 163883478 is about 12801.6982467171. The cubic root of 163883478 is about 547.2407012170.

The spelling of 163883478 in words is "one hundred sixty-three million, eight hundred eighty-three thousand, four hundred seventy-eight".