1999960201 has 4 divisors (see below), whose sum is σ = 2000187904. Its totient is φ = 1999732500.

The previous prime is 1999960187. The next prime is 1999960241. The reversal of 1999960201 is 1020699991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1020699991 = 409 ⋅2495599.

It is a cyclic number.

It is not a de Polignac number, because 1999960201 - 2⁵ = 1999960169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1999960241) 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 3 ways as a sum of consecutive naturals, for example, 100125 + ... + 118426.

It is an arithmetic number, because the mean of its divisors is an integer number (500046976).

Almost surely, 2^1999960201 is an apocalyptic number.

It is an amenable number.

1999960201 is a deficient number, since it is larger than the sum of its proper divisors (227703).

1999960201 is an equidigital number, since it uses as much as digits as its factorization.

1999960201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227702.

The product of its (nonzero) digits is 78732, while the sum is 46.

The square root of 1999960201 is about 44720.9145814349. The cubic root of 1999960201 is about 1259.9126925731.

It can be divided in two parts, 19999 and 60201, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 1999960201 in words is "one billion, nine hundred ninety-nine million, nine hundred sixty thousand, two hundred one".