163787989248 has 288 divisors, whose sum is σ = 528974772480. Its totient is φ = 49684561920.

The previous prime is 163787989243. The next prime is 163787989249. The reversal of 163787989248 is 842989787361.

163787989248 is a `hidden beast` number, since 1 + 6 + 378 + 7 + 9 + 8 + 9 + 248 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (163787989243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6366940 + ... + 6392612.

It is an arithmetic number, because the mean of its divisors is an integer number (1836717960).

Almost surely, 2^163787989248 is an apocalyptic number.

163787989248 is a gapful number since it is divisible by the number (18) 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 163787989248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264487386240).

163787989248 is an abundant number, since it is smaller than the sum of its proper divisors (365186783232).

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

163787989248 is a wasteful number, since it uses less digits than its factorization.

163787989248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25782 (or 25762 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 163787989248 in words is "one hundred sixty-three billion, seven hundred eighty-seven million, nine hundred eighty-nine thousand, two hundred forty-eight".