201920814736 has 15 divisors (see below), whose sum is σ = 391225061091. Its totient is φ = 100959508656.

The previous prime is 201920814721. The next prime is 201920814737. The reversal of 201920814736 is 637418029102.

The square root of 201920814736 is 449356.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201920814692 and 201920814701.

It is not an unprimeable number, because it can be changed into a prime (201920814737) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1741255 + ... + 1853593.

Almost surely, 2^201920814736 is an apocalyptic number.

201920814736 is the 449356-th square number.

It is an amenable number.

201920814736 is a deficient number, since it is larger than the sum of its proper divisors (189304246355).

201920814736 is an frugal number, since it uses more digits than its factorization.

201920814736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224686 (or 112341 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 201920814736 in words is "two hundred one billion, nine hundred twenty million, eight hundred fourteen thousand, seven hundred thirty-six".