163985240 has 32 divisors (see below), whose sum is σ = 377969760. Its totient is φ = 63993600.

The previous prime is 163985207. The next prime is 163985243. The reversal of 163985240 is 42589361.

It is a happy number.

163985240 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 163985194 and 163985203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163985243) 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, 48356 + ... + 51635.

It is an arithmetic number, because the mean of its divisors is an integer number (11811555).

Almost surely, 2^163985240 is an apocalyptic number.

163985240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163985240 is an abundant number, since it is smaller than the sum of its proper divisors (213984520).

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

163985240 is a wasteful number, since it uses less digits than its factorization.

163985240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100043 (or 100039 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 163985240 is about 12805.6721807174. The cubic root of 163985240 is about 547.3539458762.

The spelling of 163985240 in words is "one hundred sixty-three million, nine hundred eighty-five thousand, two hundred forty".