1898231 has 4 divisors (see below), whose sum is σ = 1902000. Its totient is φ = 1894464.

The previous prime is 1898227. The next prime is 1898243. The reversal of 1898231 is 1328981.

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

It is a cyclic number.

It is not a de Polignac number, because 1898231 - 2² = 1898227 is a prime.

It is a super-2 number, since 2×1898231² = 7206561858722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986 + ... + 2183.

It is an arithmetic number, because the mean of its divisors is an integer number (475500).

2^1898231 is an apocalyptic number.

1898231 is a deficient number, since it is larger than the sum of its proper divisors (3769).

1898231 is an equidigital number, since it uses as much as digits as its factorization.

1898231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768.

The product of its digits is 3456, while the sum is 32.

The square root of 1898231 is about 1377.7630420359. The cubic root of 1898231 is about 123.8177821368.

The spelling of 1898231 in words is "one million, eight hundred ninety-eight thousand, two hundred thirty-one".