2199276461 has 4 divisors (see below), whose sum is σ = 2199776124. Its totient is φ = 2198776800.

The previous prime is 2199276439. The next prime is 2199276479. The reversal of 2199276461 is 1646729912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 410832361 + 1788444100 = 20269^2 + 42290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199276461 - 2¹⁰ = 2199275437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199270461) 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, 243170 + ... + 252051.

It is an arithmetic number, because the mean of its divisors is an integer number (549944031).

Almost surely, 2^2199276461 is an apocalyptic number.

It is an amenable number.

2199276461 is a deficient number, since it is larger than the sum of its proper divisors (499663).

2199276461 is an equidigital number, since it uses as much as digits as its factorization.

2199276461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499662.

The product of its digits is 326592, while the sum is 47.

The square root of 2199276461 is about 46896.4440123129. Note that the first 3 decimals coincide. The cubic root of 2199276461 is about 1300.4488511217.

The spelling of 2199276461 in words is "two billion, one hundred ninety-nine million, two hundred seventy-six thousand, four hundred sixty-one".