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BaseRepresentation
bin11101011101
32120211
4131131
530020
612421
75332
oct3535
92524
101885
111464
121111
13b20
14989
1585a
hex75d

1885 has 8 divisors (see below), whose sum is σ = 2520. Its totient is φ = 1344.

The previous prime is 1879. The next prime is 1889. The reversal of 1885 is 5881.

1885 is nontrivially palindromic in base 4, base 6, base 12 and base 14.

1885 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 36 + 1849 = 6^2 + 43^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1885 - 23 = 1877 is a prime.

1885 is an undulating number in base 8 and base 14.

1885 is a nontrivial repdigit in base 12.

It is a plaindrome in base 12.

It is a nialpdrome in base 7, base 12 and base 13.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889) by changing a digit.

It is a Zeisel number, with parameters (2, 3).

It is a nontrivial repunit in base 12.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51 + ... + 79.

It is an arithmetic number, because the mean of its divisors is an integer number (315).

21885 is an apocalyptic number.

It is an amenable number.

1885 is a deficient number, since it is larger than the sum of its proper divisors (635).

1885 is a wasteful number, since it uses less digits than its factorization.

1885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47.

The product of its digits is 320, while the sum is 22.

The square root of 1885 is about 43.4165866922. The cubic root of 1885 is about 12.3529433996.

The spelling of 1885 in words is "one thousand, eight hundred eighty-five".

Divisors: 1 5 13 29 65 145 377 1885