163768336 has 20 divisors (see below), whose sum is σ = 328243500. Its totient is φ = 79060352.

The previous prime is 163768313. The next prime is 163768337. The reversal of 163768336 is 633867361.

It can be written as a sum of positive squares in 2 ways, for example, as 36529936 + 127238400 = 6044^2 + 11280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163768292 and 163768301.

It is not an unprimeable number, because it can be changed into a prime (163768337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176011 + ... + 176938.

It is an arithmetic number, because the mean of its divisors is an integer number (16412175).

Almost surely, 2^163768336 is an apocalyptic number.

163768336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163768336 is an abundant number, since it is smaller than the sum of its proper divisors (164475164).

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

163768336 is a wasteful number, since it uses less digits than its factorization.

163768336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352986 (or 352980 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 163768336 is about 12797.2003188197. The cubic root of 163768336 is about 547.1125102363.

The spelling of 163768336 in words is "one hundred sixty-three million, seven hundred sixty-eight thousand, three hundred thirty-six".