163503980 has 24 divisors (see below), whose sum is σ = 343792512. Its totient is φ = 65318912.

The previous prime is 163503979. The next prime is 163504021. The reversal of 163503980 is 89305361.

It is a self number, because there is not a number n which added to its sum of digits gives 163503980.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12524 + ... + 21996.

It is an arithmetic number, because the mean of its divisors is an integer number (14324688).

Almost surely, 2^163503980 is an apocalyptic number.

163503980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163503980 is an abundant number, since it is smaller than the sum of its proper divisors (180288532).

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

163503980 is a wasteful number, since it uses less digits than its factorization.

163503980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345 (or 10343 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 163503980 is about 12786.8674819128. The cubic root of 163503980 is about 546.8179674075.

The spelling of 163503980 in words is "one hundred sixty-three million, five hundred three thousand, nine hundred eighty".