1945218 has 16 divisors (see below), whose sum is σ = 4244256. Its totient is φ = 589440.

The previous prime is 1945199. The next prime is 1945243. The reversal of 1945218 is 8125491.

It is a happy 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, 14671 + ... + 14802.

It is an arithmetic number, because the mean of its divisors is an integer number (265266).

2^1945218 is an apocalyptic number.

1945218 is an abundant number, since it is smaller than the sum of its proper divisors (2299038).

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

1945218 is a wasteful number, since it uses less digits than its factorization.

1945218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29489.

The product of its digits is 2880, while the sum is 30.

The square root of 1945218 is about 1394.7107226949. The cubic root of 1945218 is about 124.8310891892.

The spelling of 1945218 in words is "one million, nine hundred forty-five thousand, two hundred eighteen".