1866268 has 6 divisors (see below), whose sum is σ = 3265976. Its totient is φ = 933132.

The previous prime is 1866251. The next prime is 1866269. The reversal of 1866268 is 8626681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866269) 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 as a sum of consecutive naturals, namely, 233280 + ... + 233287.

2^1866268 is an apocalyptic number.

It is an amenable number.

1866268 is a deficient number, since it is larger than the sum of its proper divisors (1399708).

1866268 is a wasteful number, since it uses less digits than its factorization.

1866268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466571 (or 466569 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 1866268 is about 1366.1141972763. The cubic root of 1866268 is about 123.1188838897.

The spelling of 1866268 in words is "one million, eight hundred sixty-six thousand, two hundred sixty-eight".