1864238 has 4 divisors (see below), whose sum is σ = 2796360. Its totient is φ = 932118.

The previous prime is 1864217. The next prime is 1864241. The reversal of 1864238 is 8324681.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 466058 + ... + 466061.

It is an arithmetic number, because the mean of its divisors is an integer number (699090).

2^1864238 is an apocalyptic number.

1864238 is a deficient number, since it is larger than the sum of its proper divisors (932122).

1864238 is an equidigital number, since it uses as much as digits as its factorization.

1864238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932121.

The product of its digits is 9216, while the sum is 32.

The square root of 1864238 is about 1365.3710118499. The cubic root of 1864238 is about 123.0742275652.

The spelling of 1864238 in words is "one million, eight hundred sixty-four thousand, two hundred thirty-eight".