1810306404 has 108 divisors (see below), whose sum is σ = 4891880448. Its totient is φ = 564345600.

The previous prime is 1810306397. The next prime is 1810306417. The reversal of 1810306404 is 4046030181.

1810306404 is a `hidden beast` number, since 1 + 8 + 10 + 3 + 0 + 640 + 4 = 666.

It is a super-2 number, since 2×1810306404² = 6554418552726822432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1986709 + ... + 1987619.

Almost surely, 2^1810306404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1810306404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2445940224).

1810306404 is an abundant number, since it is smaller than the sum of its proper divisors (3081574044).

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

1810306404 is a wasteful number, since it uses less digits than its factorization.

1810306404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1810306404 is about 42547.6956367792. The cubic root of 1810306404 is about 1218.7576720306.

Adding to 1810306404 its reverse (4046030181), we get a palindrome (5856336585).

The spelling of 1810306404 in words is "one billion, eight hundred ten million, three hundred six thousand, four hundred four".