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BaseRepresentation
bin11101101010
32121022
4131222
530043
612442
75351
oct3552
92538
101898
111476
121122
13b30
14998
15868
hex76a

1898 has 8 divisors (see below), whose sum is σ = 3108. Its totient is φ = 864.

The previous prime is 1889. The next prime is 1901. The reversal of 1898 is 8981.

1898 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 1849 + 49 = 43^2 + 7^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 73 = 1898 / (1 + 8 + 9 + 8).

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

1898 is an undulating number in base 15.

It is a Curzon number.

It is a plaindrome in base 12.

It is a nialpdrome in base 13 and base 14.

It is a zygodrome in base 12.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 62.

1898 is a deficient number, since it is larger than the sum of its proper divisors (1210).

1898 is a wasteful number, since it uses less digits than its factorization.

1898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88.

The product of its digits is 576, while the sum is 26.

The square root of 1898 is about 43.5660418216. The cubic root of 1898 is about 12.3812759378.

It can be divided in two parts, 18 and 98, that multiplied together give a square (1764 = 422).

The spelling of 1898 in words is "one thousand, eight hundred ninety-eight".

Divisors: 1 2 13 26 73 146 949 1898