1809215330 has 32 divisors (see below), whose sum is σ = 3534741504. Its totient is φ = 662751936.

The previous prime is 1809215311. The next prime is 1809215347. The reversal of 1809215330 is 335129081.

It is a super-2 number, since 2×1809215330² = 6546520220614017800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38282 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (110460672).

Almost surely, 2^1809215330 is an apocalyptic number.

1809215330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1809215330 is a deficient number, since it is larger than the sum of its proper divisors (1725526174).

1809215330 is a wasteful number, since it uses less digits than its factorization.

1809215330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109730.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1809215330 is about 42534.8719288068. The cubic root of 1809215330 is about 1218.5127738846.

The spelling of 1809215330 in words is "one billion, eight hundred nine million, two hundred fifteen thousand, three hundred thirty".