1990948 has 6 divisors (see below), whose sum is σ = 3484166. Its totient is φ = 995472.

The previous prime is 1990939. The next prime is 1990951. The reversal of 1990948 is 8490991.

It can be written as a sum of positive squares in only one way, i.e., 1790244 + 200704 = 1338^2 + 448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1990948.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248865 + ... + 248872.

2^1990948 is an apocalyptic number.

It is an amenable number.

1990948 is a deficient number, since it is larger than the sum of its proper divisors (1493218).

1990948 is a wasteful number, since it uses less digits than its factorization.

1990948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497741 (or 497739 counting only the distinct ones).

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

The square root of 1990948 is about 1411.0095676501. The cubic root of 1990948 is about 125.8017374097.

The spelling of 1990948 in words is "one million, nine hundred ninety thousand, nine hundred forty-eight".