1938201920202 has 8 divisors (see below), whose sum is σ = 3876403840416. Its totient is φ = 646067306732.

The previous prime is 1938201920191. The next prime is 1938201920209. The reversal of 1938201920202 is 2020291028391.

It is a sphenic number, since it is the product of 3 distinct primes.

1938201920202 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1938201920209) 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, 161516826678 + ... + 161516826689.

It is an arithmetic number, because the mean of its divisors is an integer number (484550480052).

Almost surely, 2^{1938201920202} is an apocalyptic number.

1938201920202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1938201920202 is a wasteful number, since it uses less digits than its factorization.

1938201920202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323033653372.

The product of its (nonzero) digits is 31104, while the sum is 39.

Adding to 1938201920202 its reverse (2020291028391), we get a palindrome (3958492948593).

The spelling of 1938201920202 in words is "one trillion, nine hundred thirty-eight billion, two hundred one million, nine hundred twenty thousand, two hundred two".