2199637481 has 2 divisors, whose sum is σ = 2199637482. Its totient is φ = 2199637480.

The previous prime is 2199637423. The next prime is 2199637487. The reversal of 2199637481 is 1847369912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2160762256 + 38875225 = 46484^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199637481 - 2¹⁸ = 2199375337 is a prime.

It is a super-3 number, since 3×2199637481³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2199637487) 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 as a sum of consecutive naturals, namely, 1099818740 + 1099818741.

It is an arithmetic number, because the mean of its divisors is an integer number (1099818741).

Almost surely, 2^2199637481 is an apocalyptic number.

It is an amenable number.

2199637481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199637481 is an equidigital number, since it uses as much as digits as its factorization.

2199637481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 2199637481 is about 46900.2929734986. The cubic root of 2199637481 is about 1300.5200051831.

The spelling of 2199637481 in words is "two billion, one hundred ninety-nine million, six hundred thirty-seven thousand, four hundred eighty-one".