163673632 has 12 divisors (see below), whose sum is σ = 322232526. Its totient is φ = 81836800.

The previous prime is 163673623. The next prime is 163673639. The reversal of 163673632 is 236376361.

It can be written as a sum of positive squares in only one way, i.e., 118461456 + 45212176 = 10884^2 + 6724^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163673591 and 163673600.

It is not an unprimeable number, because it can be changed into a prime (163673639) 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 as a sum of consecutive naturals, namely, 2557369 + ... + 2557432.

Almost surely, 2^163673632 is an apocalyptic number.

It is an amenable number.

163673632 is a deficient number, since it is larger than the sum of its proper divisors (158558894).

163673632 is an equidigital number, since it uses as much as digits as its factorization.

163673632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114811 (or 5114803 counting only the distinct ones).

The product of its digits is 81648, while the sum is 37.

The square root of 163673632 is about 12793.4995994059. The cubic root of 163673632 is about 547.0070284416.

The spelling of 163673632 in words is "one hundred sixty-three million, six hundred seventy-three thousand, six hundred thirty-two".