163930540 has 24 divisors (see below), whose sum is σ = 346322592. Its totient is φ = 65178240.

The previous prime is 163930523. The next prime is 163930549. The reversal of 163930540 is 45039361.

It is not an unprimeable number, because it can be changed into a prime (163930549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21201 + ... + 27880.

It is an arithmetic number, because the mean of its divisors is an integer number (14430108).

Almost surely, 2^163930540 is an apocalyptic number.

163930540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163930540 is an abundant number, since it is smaller than the sum of its proper divisors (182392052).

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

163930540 is a wasteful number, since it uses less digits than its factorization.

163930540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49257 (or 49255 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 163930540 is about 12803.5362302764. The cubic root of 163930540 is about 547.2930794419.

The spelling of 163930540 in words is "one hundred sixty-three million, nine hundred thirty thousand, five hundred forty".