1618804812 has 12 divisors (see below), whose sum is σ = 3777211256. Its totient is φ = 539601600.

The previous prime is 1618804793. The next prime is 1618804823. The reversal of 1618804812 is 2184088161.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 67450189 + ... + 67450212.

Almost surely, 2^1618804812 is an apocalyptic number.

1618804812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1618804812 is an abundant number, since it is smaller than the sum of its proper divisors (2158406444).

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

1618804812 is a wasteful number, since it uses less digits than its factorization.

1618804812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134900408 (or 134900406 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 39.

The square root of 1618804812 is about 40234.3735132039. The cubic root of 1618804812 is about 1174.1713939572.

The spelling of 1618804812 in words is "one billion, six hundred eighteen million, eight hundred four thousand, eight hundred twelve".