7822161649 has 8 divisors (see below), whose sum is σ = 7957081440. Its totient is φ = 7687320000.

The previous prime is 7822161647. The next prime is 7822161653. The reversal of 7822161649 is 9461612287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7822161649 - 2¹ = 7822161647 is a prime.

It is a super-2 number, since 2×7822161649² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7822161599 and 7822161608.

It is not an unprimeable number, because it can be changed into a prime (7822161643) 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 7 ways as a sum of consecutive naturals, for example, 204274 + ... + 239524.

It is an arithmetic number, because the mean of its divisors is an integer number (994635180).

Almost surely, 2^7822161649 is an apocalyptic number.

It is an amenable number.

7822161649 is a deficient number, since it is larger than the sum of its proper divisors (134919791).

7822161649 is a wasteful number, since it uses less digits than its factorization.

7822161649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39071.

The product of its digits is 290304, while the sum is 46.

The square root of 7822161649 is about 88442.9853012663. The cubic root of 7822161649 is about 1985.0689466288.

The spelling of 7822161649 in words is "seven billion, eight hundred twenty-two million, one hundred sixty-one thousand, six hundred forty-nine".