1966818 has 16 divisors (see below), whose sum is σ = 4495680. Its totient is φ = 561936.

The previous prime is 1966817. The next prime is 1966819. The reversal of 1966818 is 8186691.

It is an interprime number because it is at equal distance from previous prime (1966817) and next prime (1966819).

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1966813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23373 + ... + 23456.

It is an arithmetic number, because the mean of its divisors is an integer number (280980).

2^1966818 is an apocalyptic number.

1966818 is an abundant number, since it is smaller than the sum of its proper divisors (2528862).

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

1966818 is a wasteful number, since it uses less digits than its factorization.

1966818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46841.

The product of its digits is 20736, while the sum is 39.

The square root of 1966818 is about 1402.4328860947. The cubic root of 1966818 is about 125.2914373196.

The spelling of 1966818 in words is "one million, nine hundred sixty-six thousand, eight hundred eighteen".