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163884485 = 532776897
BaseRepresentation
bin10011100010010…
…10110111000101
3102102101012020202
421301022313011
5313423300420
624132340245
74026665222
oct1161126705
9372335222
10163884485
1184565926
1246a74685
1327c5088b
1417aa0949
15e5c3575

163884485 has 4 divisors (see below), whose sum is σ = 196661388. Its totient is φ = 131107584.

The previous prime is 163884463. The next prime is 163884493. The reversal of 163884485 is 584488361.

163884485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584488361 = 1627359243.

It can be written as a sum of positive squares in 2 ways, for example, as 99660289 + 64224196 = 9983^2 + 8014^2 .

It is a cyclic number.

It is not a de Polignac number, because 163884485 - 212 = 163880389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16388444 + ... + 16388453.

It is an arithmetic number, because the mean of its divisors is an integer number (49165347).

Almost surely, 2163884485 is an apocalyptic number.

It is an amenable number.

163884485 is a deficient number, since it is larger than the sum of its proper divisors (32776903).

163884485 is an equidigital number, since it uses as much as digits as its factorization.

163884485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32776902.

The product of its digits is 737280, while the sum is 47.

The square root of 163884485 is about 12801.7375773760. The cubic root of 163884485 is about 547.2418220749.

The spelling of 163884485 in words is "one hundred sixty-three million, eight hundred eighty-four thousand, four hundred eighty-five".

Divisors: 1 5 32776897 163884485