163782640 has 40 divisors (see below), whose sum is σ = 435195360. Its totient is φ = 56153856.

The previous prime is 163782613. The next prime is 163782719. The reversal of 163782640 is 46287361.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 163782640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145675 + ... + 146794.

It is an arithmetic number, because the mean of its divisors is an integer number (10879884).

Almost surely, 2^163782640 is an apocalyptic number.

163782640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163782640 is an abundant number, since it is smaller than the sum of its proper divisors (271412720).

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

163782640 is a wasteful number, since it uses less digits than its factorization.

163782640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292489 (or 292483 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 163782640 is about 12797.7591788563. The cubic root of 163782640 is about 547.1284385688.

The spelling of 163782640 in words is "one hundred sixty-three million, seven hundred eighty-two thousand, six hundred forty".