163528845769 has 3 divisors (see below), whose sum is σ = 163529250157. Its totient is φ = 163528441382.

The previous prime is 163528845763. The next prime is 163528845787. The reversal of 163528845769 is 967548825361.

The square root of 163528845769 is 404387.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 163528845769 - 2¹⁷ = 163528714697 is a prime.

It is a super-2 number, since 2×163528845769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163528845769.

It is not an unprimeable number, because it can be changed into a prime (163528845763) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 202194 + ... + 606580.

Almost surely, 2^163528845769 is an apocalyptic number.

163528845769 is the 404387-th square number.

163528845769 is the 202194-th centered octagonal number.

It is an amenable number.

163528845769 is a deficient number, since it is larger than the sum of its proper divisors (404388).

163528845769 is an frugal number, since it uses more digits than its factorization.

163528845769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808774 (or 404387 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 64.

Multiplying 163528845769 by its sum of digits (64), we get a square (10465846129216 = 3235096²).

The spelling of 163528845769 in words is "one hundred sixty-three billion, five hundred twenty-eight million, eight hundred forty-five thousand, seven hundred sixty-nine".