201842634361 has 3 divisors (see below), whose sum is σ = 201843083631. Its totient is φ = 201842185092.

The previous prime is 201842634359. The next prime is 201842634373. The reversal of 201842634361 is 163436248102.

The square root of 201842634361 is 449269.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 163436248102 = 2 ⋅81718124051.

It can be written as a sum of positive squares in only one way, i.e., 182516073961 + 19326560400 = 427219^2 + 139020^2 .

It is not a de Polignac number, because 201842634361 - 2¹ = 201842634359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201842634311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 224635 + ... + 673903.

It is an arithmetic number, because the mean of its divisors is an integer number (67281027877).

Almost surely, 2^201842634361 is an apocalyptic number.

201842634361 is the 449269-th square number.

201842634361 is the 224635-th centered octagonal number.

It is an amenable number.

201842634361 is a deficient number, since it is larger than the sum of its proper divisors (449270).

201842634361 is an frugal number, since it uses more digits than its factorization.

201842634361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898538 (or 449269 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 201842634361 in words is "two hundred one billion, eight hundred forty-two million, six hundred thirty-four thousand, three hundred sixty-one".