1818202 has 8 divisors (see below), whose sum is σ = 2754612. Its totient is φ = 900000.

The previous prime is 1818199. The next prime is 1818209. The reversal of 1818202 is 2028181.

It can be written as a sum of positive squares in 2 ways, for example, as 1792921 + 25281 = 1339^2 + 159^2 .

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 (1818209) 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, 4299 + ... + 4702.

2^1818202 is an apocalyptic number.

1818202 is a deficient number, since it is larger than the sum of its proper divisors (936410).

1818202 is a wasteful number, since it uses less digits than its factorization.

1818202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9104.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1818202 is about 1348.4072085242. The cubic root of 1818202 is about 122.0526960387.

It can be divided in two parts, 1818 and 202, that multiplied together give a square (367236 = 606²).

The spelling of 1818202 in words is "one million, eight hundred eighteen thousand, two hundred two".