1898216 has 8 divisors (see below), whose sum is σ = 3559170. Its totient is φ = 949104.

The previous prime is 1898209. The next prime is 1898227. The reversal of 1898216 is 6128981.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 21316 = 1370^2 + 146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118631 + ... + 118646.

2^1898216 is an apocalyptic number.

It is an amenable number.

1898216 is a deficient number, since it is larger than the sum of its proper divisors (1660954).

1898216 is a wasteful number, since it uses less digits than its factorization.

1898216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237283 (or 237279 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 1898216 is about 1377.7575984185. The cubic root of 1898216 is about 123.8174559960.

The spelling of 1898216 in words is "one million, eight hundred ninety-eight thousand, two hundred sixteen".