1898493 has 8 divisors (see below), whose sum is σ = 2590368. Its totient is φ = 1236144.

The previous prime is 1898483. The next prime is 1898521. The reversal of 1898493 is 3948981.

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

It is not a de Polignac number, because 1898493 - 2¹² = 1894397 is a prime.

1898493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7230 + ... + 7487.

It is an arithmetic number, because the mean of its divisors is an integer number (323796).

2^1898493 is an apocalyptic number.

It is an amenable number.

1898493 is a deficient number, since it is larger than the sum of its proper divisors (691875).

1898493 is a wasteful number, since it uses less digits than its factorization.

1898493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14763.

The product of its digits is 62208, while the sum is 42.

The square root of 1898493 is about 1377.8581204173. The cubic root of 1898493 is about 123.8234784520.

The spelling of 1898493 in words is "one million, eight hundred ninety-eight thousand, four hundred ninety-three".