1822161413 has 6 divisors (see below), whose sum is σ = 1849768326. Its totient is φ = 1794960552.

The previous prime is 1822161403. The next prime is 1822161463. The reversal of 1822161413 is 3141612281.

It can be written as a sum of positive squares in only one way, i.e., 1082212609 + 739948804 = 32897^2 + 27202^2 .

It is not a de Polignac number, because 1822161413 - 2⁶ = 1822161349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822161403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198470 + ... + 207447.

It is an arithmetic number, because the mean of its divisors is an integer number (308294721).

Almost surely, 2^1822161413 is an apocalyptic number.

It is an amenable number.

1822161413 is a deficient number, since it is larger than the sum of its proper divisors (27606913).

1822161413 is an frugal number, since it uses more digits than its factorization.

1822161413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406051 (or 405984 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 1822161413 is about 42686.7826499023. The cubic root of 1822161413 is about 1221.4122794481.

Adding to 1822161413 its reverse (3141612281), we get a palindrome (4963773694).

The spelling of 1822161413 in words is "one billion, eight hundred twenty-two million, one hundred sixty-one thousand, four hundred thirteen".