1898422 has 4 divisors (see below), whose sum is σ = 2847636. Its totient is φ = 949210.

The previous prime is 1898419. The next prime is 1898431. The reversal of 1898422 is 2248981.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474604 + ... + 474607.

It is an arithmetic number, because the mean of its divisors is an integer number (711909).

2^1898422 is an apocalyptic number.

1898422 is a deficient number, since it is larger than the sum of its proper divisors (949214).

1898422 is an equidigital number, since it uses as much as digits as its factorization.

1898422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949213.

The product of its digits is 9216, while the sum is 34.

The square root of 1898422 is about 1377.8323555498. The cubic root of 1898422 is about 123.8219348458.

The spelling of 1898422 in words is "one million, eight hundred ninety-eight thousand, four hundred twenty-two".