1886866 has 8 divisors (see below), whose sum is σ = 2845260. Its totient is φ = 938448.

The previous prime is 1886849. The next prime is 1886867. The reversal of 1886866 is 6686881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1879641 + 7225 = 1371^2 + 85^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1886867) 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, 2001 + ... + 2788.

2^1886866 is an apocalyptic number.

1886866 is a deficient number, since it is larger than the sum of its proper divisors (958394).

1886866 is a wasteful number, since it uses less digits than its factorization.

1886866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988.

The product of its digits is 110592, while the sum is 43.

The square root of 1886866 is about 1373.6324107999. The cubic root of 1886866 is about 123.5701819896.

The spelling of 1886866 in words is "one million, eight hundred eighty-six thousand, eight hundred sixty-six".