163316640 has 96 divisors (see below), whose sum is σ = 519172416. Its totient is φ = 43151360.

The previous prime is 163316611. The next prime is 163316683. The reversal of 163316640 is 46613361.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 163316598 and 163316607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52735 + ... + 55745.

It is an arithmetic number, because the mean of its divisors is an integer number (5408046).

Almost surely, 2^163316640 is an apocalyptic number.

163316640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163316640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259586208).

163316640 is an abundant number, since it is smaller than the sum of its proper divisors (355855776).

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

163316640 is a wasteful number, since it uses less digits than its factorization.

163316640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 163316640 is about 12779.5398978210. The cubic root of 163316640 is about 546.6090427727.

The spelling of 163316640 in words is "one hundred sixty-three million, three hundred sixteen thousand, six hundred forty".