1986413 has 16 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 1606080.

The previous prime is 1986401. The next prime is 1986421. The reversal of 1986413 is 3146891.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1986413 - 2¹⁴ = 1970029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1986413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3908 + ... + 4386.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

2^1986413 is an apocalyptic number.

1986413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1986413 is a deficient number, since it is larger than the sum of its proper divisors (432787).

1986413 is a wasteful number, since it uses less digits than its factorization.

1986413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 5184, while the sum is 32.

The square root of 1986413 is about 1409.4016460896. The cubic root of 1986413 is about 125.7061473357.

The spelling of 1986413 in words is "one million, nine hundred eighty-six thousand, four hundred thirteen".