1816485802 has 12 divisors (see below), whose sum is σ = 2894435910. Its totient is φ = 854816576.

The previous prime is 1816485767. The next prime is 1816485809. The reversal of 1816485802 is 2085846181.

It can be written as a sum of positive squares in 3 ways, for example, as 1795132161 + 21353641 = 42369^2 + 4621^2 .

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1816485809) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1570777 + ... + 1571932.

Almost surely, 2^1816485802 is an apocalyptic number.

1816485802 is a deficient number, since it is larger than the sum of its proper divisors (1077950108).

1816485802 is a wasteful number, since it uses less digits than its factorization.

1816485802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142745 (or 3142728 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 1816485802 is about 42620.2510785659. The cubic root of 1816485802 is about 1220.1428216743.

The spelling of 1816485802 in words is "one billion, eight hundred sixteen million, four hundred eighty-five thousand, eight hundred two".