1864231 has 4 divisors (see below), whose sum is σ = 1875832. Its totient is φ = 1852632.

The previous prime is 1864217. The next prime is 1864241. The reversal of 1864231 is 1324681.

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 1864231 - 2¹³ = 1856039 is a prime.

It is a super-2 number, since 2×1864231² = 6950714442722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1864196 and 1864205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (468958).

2^1864231 is an apocalyptic number.

1864231 is a deficient number, since it is larger than the sum of its proper divisors (11601).

1864231 is a wasteful number, since it uses less digits than its factorization.

1864231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11600.

The product of its digits is 1152, while the sum is 25.

The square root of 1864231 is about 1365.3684484417. The cubic root of 1864231 is about 123.0740735218.

The spelling of 1864231 in words is "one million, eight hundred sixty-four thousand, two hundred thirty-one".