1999056852 has 36 divisors (see below), whose sum is σ = 5441878260. Its totient is φ = 615094272.

The previous prime is 1999056817. The next prime is 1999056869. The reversal of 1999056852 is 2586509991.

It can be written as a sum of positive squares in 2 ways, for example, as 1230325776 + 768731076 = 35076^2 + 27726^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2135277 + ... + 2136212.

It is an arithmetic number, because the mean of its divisors is an integer number (151163285).

Almost surely, 2^1999056852 is an apocalyptic number.

1999056852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1999056852 is an abundant number, since it is smaller than the sum of its proper divisors (3442821408).

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

1999056852 is a wasteful number, since it uses less digits than its factorization.

1999056852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271512 (or 4271507 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The square root of 1999056852 is about 44710.8135913450. The cubic root of 1999056852 is about 1259.7229700855.

The spelling of 1999056852 in words is "one billion, nine hundred ninety-nine million, fifty-six thousand, eight hundred fifty-two".