1820104008 has 16 divisors (see below), whose sum is σ = 4550260080. Its totient is φ = 606701328.

The previous prime is 1820103979. The next prime is 1820104009. The reversal of 1820104008 is 8004010281.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 75837667 = 1820104008 / (1 + 8 + 2 + 0 + 1 + 0 + 4 + 0 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (1820104009) 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, 37918810 + ... + 37918857.

It is an arithmetic number, because the mean of its divisors is an integer number (284391255).

Almost surely, 2^1820104008 is an apocalyptic number.

It is an amenable number.

1820104008 is an abundant number, since it is smaller than the sum of its proper divisors (2730156072).

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

1820104008 is a wasteful number, since it uses less digits than its factorization.

1820104008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75837676 (or 75837672 counting only the distinct ones).

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

The square root of 1820104008 is about 42662.6769905499. The cubic root of 1820104008 is about 1220.9524068860.

Adding to 1820104008 its reverse (8004010281), we get a palindrome (9824114289).

The spelling of 1820104008 in words is "one billion, eight hundred twenty million, one hundred four thousand, eight".