1812021482 has 8 divisors (see below), whose sum is σ = 2736274500. Its totient is φ = 899929984.

The previous prime is 1812021481. The next prime is 1812021487. The reversal of 1812021482 is 2841202181.

It can be written as a sum of positive squares in 2 ways, for example, as 1298953681 + 513067801 = 36041^2 + 22651^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1812021481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040007 + ... + 3040602.

Almost surely, 2^1812021482 is an apocalyptic number.

1812021482 is a deficient number, since it is larger than the sum of its proper divisors (924253018).

1812021482 is a wasteful number, since it uses less digits than its factorization.

1812021482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080760.

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 1812021482 is about 42567.8456349391. The cubic root of 1812021482 is about 1219.1424328111.

The spelling of 1812021482 in words is "one billion, eight hundred twelve million, twenty-one thousand, four hundred eighty-two".