2000196521 has 8 divisors (see below), whose sum is σ = 2087644104. Its totient is φ = 1914590080.

The previous prime is 2000196509. The next prime is 2000196547. The reversal of 2000196521 is 1256910002.

It can be written as a sum of positive squares in 4 ways, for example, as 239135296 + 1761061225 = 15464^2 + 41965^2 .

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 2000196521 - 2¹⁴ = 2000180137 is a prime.

It is a super-2 number, since 2×2000196521² = 8001572245241006882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2000196581) 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 7 ways as a sum of consecutive naturals, for example, 458066 + ... + 462411.

It is an arithmetic number, because the mean of its divisors is an integer number (260955513).

Almost surely, 2^2000196521 is an apocalyptic number.

It is an amenable number.

2000196521 is a deficient number, since it is larger than the sum of its proper divisors (87447583).

2000196521 is an equidigital number, since it uses as much as digits as its factorization.

2000196521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920571.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2000196521 is about 44723.5566675997. The cubic root of 2000196521 is about 1259.9623153674.

The spelling of 2000196521 in words is "two billion, one hundred ninety-six thousand, five hundred twenty-one".