83982842849 has 4 divisors (see below), whose sum is σ = 83986414740. Its totient is φ = 83979270960.

The previous prime is 83982842843. The next prime is 83982842857. The reversal of 83982842849 is 94824828938.

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 22760248225 + 61222594624 = 150865^2 + 247432^2 .

It is a cyclic number.

It is not a de Polignac number, because 83982842849 - 2¹⁶ = 83982777313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83982842843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750442 + ... + 1797779.

It is an arithmetic number, because the mean of its divisors is an integer number (20996603685).

Almost surely, 2^83982842849 is an apocalyptic number.

It is an amenable number.

83982842849 is a deficient number, since it is larger than the sum of its proper divisors (3571891).

83982842849 is a wasteful number, since it uses less digits than its factorization.

83982842849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571890.

The product of its digits is 63700992, while the sum is 65.

The spelling of 83982842849 in words is "eighty-three billion, nine hundred eighty-two million, eight hundred forty-two thousand, eight hundred forty-nine".