1898889 has 8 divisors (see below), whose sum is σ = 2555520. Its totient is φ = 1254096.

The previous prime is 1898887. The next prime is 1898893. The reversal of 1898889 is 9888981.

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

It is not a de Polignac number, because 1898889 - 2¹ = 1898887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1898881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2577 + ... + 3230.

It is an arithmetic number, because the mean of its divisors is an integer number (319440).

2^1898889 is an apocalyptic number.

It is an amenable number.

1898889 is a deficient number, since it is larger than the sum of its proper divisors (656631).

1898889 is a wasteful number, since it uses less digits than its factorization.

1898889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919.

The product of its digits is 331776, while the sum is 51.

The square root of 1898889 is about 1378.0018142223. The cubic root of 1898889 is about 123.8320871552.

The spelling of 1898889 in words is "one million, eight hundred ninety-eight thousand, eight hundred eighty-nine".