1800102 has 8 divisors (see below), whose sum is σ = 3600216. Its totient is φ = 600032.

The previous prime is 1800091. The next prime is 1800103. The reversal of 1800102 is 2010081.

It is a happy number.

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

1800102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800103) 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, 150003 + ... + 150014.

It is an arithmetic number, because the mean of its divisors is an integer number (450027).

2^1800102 is an apocalyptic number.

1800102 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.

1800102 is a wasteful number, since it uses less digits than its factorization.

1800102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300022.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1800102 is about 1341.6787991170. The cubic root of 1800102 is about 121.6463375888.

Adding to 1800102 its reverse (2010081), we get a palindrome (3810183).

The spelling of 1800102 in words is "one million, eight hundred thousand, one hundred two".