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BaseRepresentation
bin11101001100
32120012
4131030
524433
612352
75306
oct3514
92505
101868
111449
1210b8
13b09
14976
15848
hex74c

1868 has 6 divisors (see below), whose sum is σ = 3276. Its totient is φ = 932.

The previous prime is 1867. The next prime is 1871. The reversal of 1868 is 8681.

1868 is nontrivially palindromic in base 15.

1868 is an undulating number in base 15.

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230 + ... + 237.

It is an arithmetic number, because the mean of its divisors is an integer number (546).

21868 is an apocalyptic number.

It is an amenable number.

1868 is a deficient number, since it is larger than the sum of its proper divisors (1408).

1868 is a wasteful number, since it uses less digits than its factorization.

1868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 1868 is about 43.2203655699. The cubic root of 1868 is about 12.3156959160.

Adding to 1868 its sum of digits (23), we get a triangular number (1891 = T61).

The spelling of 1868 in words is "one thousand, eight hundred sixty-eight".

Divisors: 1 2 4 467 934 1868