1990814 has 16 divisors (see below), whose sum is σ = 3493248. Its totient is φ = 833112.

The previous prime is 1990787. The next prime is 1990823. The reversal of 1990814 is 4180991.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1052 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (218328).

2^1990814 is an apocalyptic number.

1990814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1990814 is a deficient number, since it is larger than the sum of its proper divisors (1502434).

1990814 is a wasteful number, since it uses less digits than its factorization.

1990814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1990814 is about 1410.9620831192. The cubic root of 1990814 is about 125.7989150003.

The spelling of 1990814 in words is "one million, nine hundred ninety thousand, eight hundred fourteen".