1990196 has 12 divisors (see below), whose sum is σ = 3750852. Its totient is φ = 918528.

The previous prime is 1990189. The next prime is 1990211. The reversal of 1990196 is 6910991.

It can be written as a sum of positive squares in 2 ways, for example, as 1060900 + 929296 = 1030^2 + 964^2 .

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, 19085 + ... + 19188.

It is an arithmetic number, because the mean of its divisors is an integer number (312571).

2^1990196 is an apocalyptic number.

It is an amenable number.

1990196 is a deficient number, since it is larger than the sum of its proper divisors (1760656).

1990196 is a wasteful number, since it uses less digits than its factorization.

1990196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38290 (or 38288 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 1990196 is about 1410.7430666142. The cubic root of 1990196 is about 125.7858965774.

The spelling of 1990196 in words is "one million, nine hundred ninety thousand, one hundred ninety-six".