1989196 has 24 divisors (see below), whose sum is σ = 3873744. Its totient is φ = 886080.

The previous prime is 1989193. The next prime is 1989203. The reversal of 1989196 is 6919891.

1989196 = 23² + 24² + ... + 181².

It is not an unprimeable number, because it can be changed into a prime (1989193) 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 in 7 ways as a sum of consecutive naturals, for example, 1906 + ... + 2758.

It is an arithmetic number, because the mean of its divisors is an integer number (161406).

2^1989196 is an apocalyptic number.

It is an amenable number.

1989196 is a deficient number, since it is larger than the sum of its proper divisors (1884548).

1989196 is a wasteful number, since it uses less digits than its factorization.

1989196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its digits is 34992, while the sum is 43.

The square root of 1989196 is about 1410.3885989329. The cubic root of 1989196 is about 125.7648254585.

The spelling of 1989196 in words is "one million, nine hundred eighty-nine thousand, one hundred ninety-six".