163813447633 has 8 divisors (see below), whose sum is σ = 178725032640. Its totient is φ = 148905104880.

The previous prime is 163813447531. The next prime is 163813447691. The reversal of 163813447633 is 336744318361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163813447633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163813747633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704310 + ... + 907567.

It is an arithmetic number, because the mean of its divisors is an integer number (22340629080).

Almost surely, 2^163813447633 is an apocalyptic number.

It is an amenable number.

163813447633 is a deficient number, since it is larger than the sum of its proper divisors (14911585007).

163813447633 is a wasteful number, since it uses less digits than its factorization.

163813447633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621127.

The product of its digits is 2612736, while the sum is 49.

The spelling of 163813447633 in words is "one hundred sixty-three billion, eight hundred thirteen million, four hundred forty-seven thousand, six hundred thirty-three".