1820946 has 8 divisors (see below), whose sum is σ = 3641904. Its totient is φ = 606980.

The previous prime is 1820927. The next prime is 1820947. The reversal of 1820946 is 6490281.

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

1820946 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1820947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151740 + ... + 151751.

It is an arithmetic number, because the mean of its divisors is an integer number (455238).

2^1820946 is an apocalyptic number.

1820946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1820946 is a wasteful number, since it uses less digits than its factorization.

1820946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303496.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1820946 is about 1349.4243217017. The cubic root of 1820946 is about 122.1140651380.

The spelling of 1820946 in words is "one million, eight hundred twenty thousand, nine hundred forty-six".