1820018202 has 8 divisors (see below), whose sum is σ = 3640036416. Its totient is φ = 606672732.

The previous prime is 1820018171. The next prime is 1820018203. The reversal of 1820018202 is 2028100281.

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

1820018202 is an admirable number.

It is a super-2 number, since 2×1820018202² = 6624932511222625608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1820018203) 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, 151668178 + ... + 151668189.

It is an arithmetic number, because the mean of its divisors is an integer number (455004552).

Almost surely, 2^1820018202 is an apocalyptic number.

1820018202 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.

1820018202 is a wasteful number, since it uses less digits than its factorization.

1820018202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303336372.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1820018202 is about 42661.6713456001. The cubic root of 1820018202 is about 1220.9332199443.

Adding to 1820018202 its reverse (2028100281), we get a palindrome (3848118483).

The spelling of 1820018202 in words is "one billion, eight hundred twenty million, eighteen thousand, two hundred two".