163803604682 has 4 divisors (see below), whose sum is σ = 245705407026. Its totient is φ = 81901802340.

The previous prime is 163803604651. The next prime is 163803604693. The reversal of 163803604682 is 286406308361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 111943107241 + 51860497441 = 334579^2 + 227729^2 .

It is a super-2 number, since 2×163803604682² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40950901169 + ... + 40950901172.

Almost surely, 2^163803604682 is an apocalyptic number.

163803604682 is a deficient number, since it is larger than the sum of its proper divisors (81901802344).

163803604682 is an equidigital number, since it uses as much as digits as its factorization.

163803604682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81901802343.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 163803604682 in words is "one hundred sixty-three billion, eight hundred three million, six hundred four thousand, six hundred eighty-two".