1986196 has 6 divisors (see below), whose sum is σ = 3475850. Its totient is φ = 993096.

The previous prime is 1986169. The next prime is 1986199. The reversal of 1986196 is 6916891.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 81796 = 1380^2 + 286^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986199) by changing a digit.

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 as a sum of consecutive naturals, namely, 248271 + ... + 248278.

2^1986196 is an apocalyptic number.

It is an amenable number.

1986196 is a deficient number, since it is larger than the sum of its proper divisors (1489654).

1986196 is a wasteful number, since it uses less digits than its factorization.

1986196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496553 (or 496551 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 1986196 is about 1409.3246609635. The cubic root of 1986196 is about 125.7015696996.

The spelling of 1986196 in words is "one million, nine hundred eighty-six thousand, one hundred ninety-six".