1986486 has 8 divisors (see below), whose sum is σ = 3972984. Its totient is φ = 662160.

The previous prime is 1986461. The next prime is 1986497. The reversal of 1986486 is 6846891.

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

1986486 is an admirable number.

It is a super-2 number, since 2×1986486² = 7892253256392, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165535 + ... + 165546.

It is an arithmetic number, because the mean of its divisors is an integer number (496623).

2^1986486 is an apocalyptic number.

1986486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1986486 is a wasteful number, since it uses less digits than its factorization.

1986486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331086.

The product of its digits is 82944, while the sum is 42.

The square root of 1986486 is about 1409.4275433665. The cubic root of 1986486 is about 125.7076872029.

The spelling of 1986486 in words is "one million, nine hundred eighty-six thousand, four hundred eighty-six".