83308921849 has 4 divisors (see below), whose sum is σ = 83405906320. Its totient is φ = 83211937380.

The previous prime is 83308921823. The next prime is 83308921859. The reversal of 83308921849 is 94812980338.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83308921849 - 2⁷ = 83308921721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83308921849.

It is not an unprimeable number, because it can be changed into a prime (83308921819) 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, 48490947 + ... + 48492664.

It is an arithmetic number, because the mean of its divisors is an integer number (20851476580).

Almost surely, 2^83308921849 is an apocalyptic number.

It is an amenable number.

83308921849 is a deficient number, since it is larger than the sum of its proper divisors (96984471).

83308921849 is an equidigital number, since it uses as much as digits as its factorization.

83308921849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96984470.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 83308921849 in words is "eighty-three billion, three hundred eight million, nine hundred twenty-one thousand, eight hundred forty-nine".