83531982361 has 3 divisors (see below), whose sum is σ = 83532271381. Its totient is φ = 83531693342.

The previous prime is 83531982341. The next prime is 83531982371. The reversal of 83531982361 is 16328913538.

The square root of 83531982361 is 289019.

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.

It is not a de Polignac number, because 83531982361 - 2⁹ = 83531981849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83531982341) 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 2 ways as a sum of consecutive naturals, for example, 144510 + ... + 433528.

Almost surely, 2^83531982361 is an apocalyptic number.

83531982361 is the 289019-th square number.

83531982361 is the 144510-th centered octagonal number.

It is an amenable number.

83531982361 is a deficient number, since it is larger than the sum of its proper divisors (289020).

83531982361 is an frugal number, since it uses more digits than its factorization.

83531982361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578038 (or 289019 counting only the distinct ones).

The product of its digits is 933120, while the sum is 49.

Multiplying 83531982361 by its sum of digits (49), we get a square (4093067135689 = 2023133²).

The spelling of 83531982361 in words is "eighty-three billion, five hundred thirty-one million, nine hundred eighty-two thousand, three hundred sixty-one".