1886985 has 24 divisors (see below), whose sum is σ = 3444480. Its totient is φ = 952992.

The previous prime is 1886981. The next prime is 1886993. The reversal of 1886985 is 5896881.

It is not a de Polignac number, because 1886985 - 2² = 1886981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1886985.

It is not an unprimeable number, because it can be changed into a prime (1886981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249 + ... + 1958.

It is an arithmetic number, because the mean of its divisors is an integer number (143520).

2^1886985 is an apocalyptic number.

1886985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1886985 is a deficient number, since it is larger than the sum of its proper divisors (1557495).

1886985 is a wasteful number, since it uses less digits than its factorization.

1886985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2234 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1886985 is about 1373.6757259266. The cubic root of 1886985 is about 123.5727796908.

The spelling of 1886985 in words is "one million, eight hundred eighty-six thousand, nine hundred eighty-five".