1820200002 has 32 divisors (see below), whose sum is σ = 3733357824. Its totient is φ = 591273600.

The previous prime is 1820200001. The next prime is 1820200003. The reversal of 1820200002 is 2000020281.

It is an interprime number because it is at equal distance from previous prime (1820200001) and next prime (1820200003).

It is not an unprimeable number, because it can be changed into a prime (1820200001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247543 + ... + 254789.

It is an arithmetic number, because the mean of its divisors is an integer number (116667432).

Almost surely, 2^1820200002 is an apocalyptic number.

1820200002 is an abundant number, since it is smaller than the sum of its proper divisors (1913157822).

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

1820200002 is a wasteful number, since it uses less digits than its factorization.

1820200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8314.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1820200002 is about 42663.8020106038. The cubic root of 1820200002 is about 1220.9738712354.

Adding to 1820200002 its reverse (2000020281), we get a palindrome (3820220283).

The spelling of 1820200002 in words is "one billion, eight hundred twenty million, two hundred thousand, two".