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1894 = 2947
BaseRepresentation
bin11101100110
32121011
4131212
530034
612434
75344
oct3546
92534
101894
111472
12111a
13b29
14994
15864
hex766

1894 has 4 divisors (see below), whose sum is σ = 2844. Its totient is φ = 946.

The previous prime is 1889. The next prime is 1901. The reversal of 1894 is 4981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4981 = 17293.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 12.

It is a nialpdrome in base 14, base 15 and base 16.

It is a congruent number.

It is an unprimeable number.

1894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472 + ... + 475.

It is an arithmetic number, because the mean of its divisors is an integer number (711).

1894 is a deficient number, since it is larger than the sum of its proper divisors (950).

1894 is an equidigital number, since it uses as much as digits as its factorization.

1894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its digits is 288, while the sum is 22.

The square root of 1894 is about 43.5201102940. The cubic root of 1894 is about 12.3725720503.

The spelling of 1894 in words is "one thousand, eight hundred ninety-four".

Divisors: 1 2 947 1894