163930780 has 48 divisors (see below), whose sum is σ = 373643424. Its totient is φ = 60053760.

The previous prime is 163930763. The next prime is 163930787. The reversal of 163930780 is 87039361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163930787) 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 15 ways as a sum of consecutive naturals, for example, 31654 + ... + 36466.

It is an arithmetic number, because the mean of its divisors is an integer number (7784238).

Almost surely, 2^163930780 is an apocalyptic number.

163930780 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 163930780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186821712).

163930780 is an abundant number, since it is smaller than the sum of its proper divisors (209712644).

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

163930780 is a wasteful number, since it uses less digits than its factorization.

163930780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966 (or 4964 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 163930780 is about 12803.5456026837. The cubic root of 163930780 is about 547.2933465271.

The spelling of 163930780 in words is "one hundred sixty-three million, nine hundred thirty thousand, seven hundred eighty".