1820954 has 8 divisors (see below), whose sum is σ = 2756820. Its totient is φ = 902016.

The previous prime is 1820947. The next prime is 1820957. The reversal of 1820954 is 4590281.

It can be written as a sum of positive squares in 2 ways, for example, as 1760929 + 60025 = 1327^2 + 245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1820957) 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 3 ways as a sum of consecutive naturals, for example, 3959 + ... + 4394.

2^1820954 is an apocalyptic number.

1820954 is a deficient number, since it is larger than the sum of its proper divisors (935866).

1820954 is a wasteful number, since it uses less digits than its factorization.

1820954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1820954 is about 1349.4272859254. The cubic root of 1820954 is about 122.1142439665.

The spelling of 1820954 in words is "one million, eight hundred twenty thousand, nine hundred fifty-four".