1812264481 has 8 divisors (see below), whose sum is σ = 1930643424. Its totient is φ = 1695193920.

The previous prime is 1812264451. The next prime is 1812264497. The reversal of 1812264481 is 1844622181.

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

It is a cyclic number.

It is not a de Polignac number, because 1812264481 - 2¹³ = 1812256289 is a prime.

It is a super-2 number, since 2×1812264481² = 6568605098188398722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1812264481.

It is not an unprimeable number, because it can be changed into a prime (1812264451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324235 + ... + 329776.

It is an arithmetic number, because the mean of its divisors is an integer number (241330428).

Almost surely, 2^1812264481 is an apocalyptic number.

It is an amenable number.

1812264481 is a deficient number, since it is larger than the sum of its proper divisors (118378943).

1812264481 is a wasteful number, since it uses less digits than its factorization.

1812264481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654191.

The product of its digits is 24576, while the sum is 37.

The square root of 1812264481 is about 42570.6997945770. The cubic root of 1812264481 is about 1219.1969275937.

The spelling of 1812264481 in words is "one billion, eight hundred twelve million, two hundred sixty-four thousand, four hundred eighty-one".