163533856 has 12 divisors (see below), whose sum is σ = 321957342. Its totient is φ = 81766912.

The previous prime is 163533827. The next prime is 163533889. The reversal of 163533856 is 658335361.

It can be written as a sum of positive squares in only one way, i.e., 91011600 + 72522256 = 9540^2 + 8516^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2555185 + ... + 2555248.

Almost surely, 2^163533856 is an apocalyptic number.

163533856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163533856 is a deficient number, since it is larger than the sum of its proper divisors (158423486).

163533856 is an equidigital number, since it uses as much as digits as its factorization.

163533856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110443 (or 5110435 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 163533856 is about 12788.0356583801. The cubic root of 163533856 is about 546.8512708550.

The spelling of 163533856 in words is "one hundred sixty-three million, five hundred thirty-three thousand, eight hundred fifty-six".