1809515142852 has 48 divisors (see below), whose sum is σ = 4232693606400. Its totient is φ = 601674752160.

The previous prime is 1809515142817. The next prime is 1809515142889. The reversal of 1809515142852 is 2582415159081.

It is a junction number, because it is equal to n+sod(n) for n = 1809515142795 and 1809515142804.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7815027 + ... + 8043237.

It is an arithmetic number, because the mean of its divisors is an integer number (88181116800).

Almost surely, 2^{1809515142852} is an apocalyptic number.

1809515142852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1809515142852 is an abundant number, since it is smaller than the sum of its proper divisors (2423178463548).

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

1809515142852 is a wasteful number, since it uses less digits than its factorization.

1809515142852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229856 (or 229854 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 1809515142852 in words is "one trillion, eight hundred nine billion, five hundred fifteen million, one hundred forty-two thousand, eight hundred fifty-two".