163664410 has 48 divisors (see below), whose sum is σ = 369068616. Its totient is φ = 51795072.

The previous prime is 163664399. The next prime is 163664419. The reversal of 163664410 is 14466361.

It can be written as a sum of positive squares in 4 ways, for example, as 134536801 + 29127609 = 11599^2 + 5397^2 .

It is not an unprimeable number, because it can be changed into a prime (163664419) 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 23 ways as a sum of consecutive naturals, for example, 6477 + ... + 19216.

Almost surely, 2^163664410 is an apocalyptic number.

163664410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163664410 is an abundant number, since it is smaller than the sum of its proper divisors (205404206).

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

163664410 is a wasteful number, since it uses less digits than its factorization.

163664410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25727 (or 25720 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 163664410 is about 12793.1391769182. The cubic root of 163664410 is about 546.9967547575.

The spelling of 163664410 in words is "one hundred sixty-three million, six hundred sixty-four thousand, four hundred ten".