202001201993 has 4 divisors (see below), whose sum is σ = 202003372740. Its totient is φ = 201999031248.

The previous prime is 202001201989. The next prime is 202001202023. The reversal of 202001201993 is 399102100202.

202001201993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94487382544 + 107513819449 = 307388^2 + 327893^2 .

It is a cyclic number.

It is not a de Polignac number, because 202001201993 - 2² = 202001201989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202001201393) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 939230 + ... + 1134087.

It is an arithmetic number, because the mean of its divisors is an integer number (50500843185).

Almost surely, 2^202001201993 is an apocalyptic number.

It is an amenable number.

202001201993 is a deficient number, since it is larger than the sum of its proper divisors (2170747).

202001201993 is an equidigital number, since it uses as much as digits as its factorization.

202001201993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170746.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 202001201993 in words is "two hundred two billion, one million, two hundred one thousand, nine hundred ninety-three".