1868506 has 4 divisors (see below), whose sum is σ = 2802762. Its totient is φ = 934252.

The previous prime is 1868501. The next prime is 1868513. The reversal of 1868506 is 6058681.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1798281 + 70225 = 1341^2 + 265^2 .

It is not an unprimeable number, because it can be changed into a prime (1868501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 467125 + ... + 467128.

2^1868506 is an apocalyptic number.

1868506 is a deficient number, since it is larger than the sum of its proper divisors (934256).

1868506 is an equidigital number, since it uses as much as digits as its factorization.

1868506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934255.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1868506 is about 1366.9330634673. The cubic root of 1868506 is about 123.1680783238.

The spelling of 1868506 in words is "one million, eight hundred sixty-eight thousand, five hundred six".