82819104749 has 4 divisors (see below), whose sum is σ = 82821176064. Its totient is φ = 82817033436.

The previous prime is 82819104689. The next prime is 82819104751. The reversal of 82819104749 is 94740191828.

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 82819104749 - 2³⁶ = 14099628013 is a prime.

It is a super-2 number, since 2×82819104749² (a number of 23 digits) contains 22 as substring.

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 82819104749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82819104779) 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, 974477 + ... + 1056050.

It is an arithmetic number, because the mean of its divisors is an integer number (20705294016).

Almost surely, 2^82819104749 is an apocalyptic number.

It is an amenable number.

82819104749 is a deficient number, since it is larger than the sum of its proper divisors (2071315).

82819104749 is a wasteful number, since it uses less digits than its factorization.

82819104749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071314.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The spelling of 82819104749 in words is "eighty-two billion, eight hundred nineteen million, one hundred four thousand, seven hundred forty-nine".