163116840 has 32 divisors (see below), whose sum is σ = 489350880. Its totient is φ = 43497792.

The previous prime is 163116827. The next prime is 163116841. The reversal of 163116840 is 48611361.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 163116798 and 163116807.

It is not an unprimeable number, because it can be changed into a prime (163116841) 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, 679534 + ... + 679773.

It is an arithmetic number, because the mean of its divisors is an integer number (15292215).

Almost surely, 2^163116840 is an apocalyptic number.

163116840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163116840 is an abundant number, since it is smaller than the sum of its proper divisors (326234040).

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

163116840 is a wasteful number, since it uses less digits than its factorization.

163116840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359321 (or 1359317 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 163116840 is about 12771.7203226504. The cubic root of 163116840 is about 546.3860464029.

The spelling of 163116840 in words is "one hundred sixty-three million, one hundred sixteen thousand, eight hundred forty".