1866852 has 36 divisors (see below), whose sum is σ = 5083260. Its totient is φ = 574272.

The previous prime is 1866847. The next prime is 1866857. The reversal of 1866852 is 2586681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1866847) and next prime (1866857).

It can be written as a sum of positive squares in 2 ways, for example, as 553536 + 1313316 = 744^2 + 1146^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1866857) 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 11 ways as a sum of consecutive naturals, for example, 1527 + ... + 2462.

2^1866852 is an apocalyptic number.

1866852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1866852 is an abundant number, since it is smaller than the sum of its proper divisors (3216408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1866852 is a wasteful number, since it uses less digits than its factorization.

1866852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012 (or 4007 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1866852 is about 1366.3279254996. The cubic root of 1866852 is about 123.1317248339.

The spelling of 1866852 in words is "one million, eight hundred sixty-six thousand, eight hundred fifty-two".