1986395 has 12 divisors (see below), whose sum is σ = 2495136. Its totient is φ = 1518000.

The previous prime is 1986373. The next prime is 1986401. The reversal of 1986395 is 5936891.

It is not a de Polignac number, because 1986395 - 2¹⁶ = 1920859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2270 + ... + 3020.

It is an arithmetic number, because the mean of its divisors is an integer number (207928).

2^1986395 is an apocalyptic number.

1986395 is a deficient number, since it is larger than the sum of its proper divisors (508741).

1986395 is an equidigital number, since it uses as much as digits as its factorization.

1986395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 779 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 1986395 is about 1409.3952603865. The cubic root of 1986395 is about 125.7057676366.

The spelling of 1986395 in words is "one million, nine hundred eighty-six thousand, three hundred ninety-five".