1648218 has 64 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 430080.

The previous prime is 1648217. The next prime is 1648223. The reversal of 1648218 is 8128461.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1648217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14530 + ... + 14642.

It is an arithmetic number, because the mean of its divisors is an integer number (64638).

2^1648218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1648218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2068416).

1648218 is an abundant number, since it is smaller than the sum of its proper divisors (2488614).

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

1648218 is a wasteful number, since it uses less digits than its factorization.

1648218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159.

The product of its digits is 3072, while the sum is 30.

The square root of 1648218 is about 1283.8294279226. The cubic root of 1648218 is about 118.1240197561.

Multiplying 1648218 by its sum of digits (30), we get a triangular number (49446540 = T₉₉₄₄).

The spelling of 1648218 in words is "one million, six hundred forty-eight thousand, two hundred eighteen".