1866160 has 20 divisors (see below), whose sum is σ = 4339008. Its totient is φ = 746432.

The previous prime is 1866143. The next prime is 1866191. The reversal of 1866160 is 616681.

It is a tau number, because it is divible by the number of its divisors (20).

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 in 3 ways as a sum of consecutive naturals, for example, 11584 + ... + 11743.

2^1866160 is an apocalyptic number.

1866160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1866160 is an abundant number, since it is smaller than the sum of its proper divisors (2472848).

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

1866160 is a wasteful number, since it uses less digits than its factorization.

1866160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340 (or 23334 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1866160 is about 1366.0746685302. The cubic root of 1866160 is about 123.1165089011.

It can be divided in two parts, 18661 and 60, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 1866160 in words is "one million, eight hundred sixty-six thousand, one hundred sixty".