163868552 has 8 divisors (see below), whose sum is σ = 307253550. Its totient is φ = 81934272.

The previous prime is 163868543. The next prime is 163868557. The reversal of 163868552 is 255868361.

It can be written as a sum of positive squares in only one way, i.e., 133772356 + 30096196 = 11566^2 + 5486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (163868557) by changing a digit.

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, 10241777 + ... + 10241792.

Almost surely, 2^163868552 is an apocalyptic number.

It is an amenable number.

163868552 is a deficient number, since it is larger than the sum of its proper divisors (143384998).

163868552 is a wasteful number, since it uses less digits than its factorization.

163868552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20483575 (or 20483571 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 163868552 is about 12801.1152639135. The cubic root of 163868552 is about 547.2240870494.

The spelling of 163868552 in words is "one hundred sixty-three million, eight hundred sixty-eight thousand, five hundred fifty-two".