2199552961 has 2 divisors, whose sum is σ = 2199552962. Its totient is φ = 2199552960.

The previous prime is 2199552959. The next prime is 2199552989. The reversal of 2199552961 is 1692559912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1146161025 + 1053391936 = 33855^2 + 32456^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199552961 - 2¹ = 2199552959 is a prime.

Together with 2199552959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2199552941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099776480 + 1099776481.

It is an arithmetic number, because the mean of its divisors is an integer number (1099776481).

Almost surely, 2^2199552961 is an apocalyptic number.

It is an amenable number.

2199552961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199552961 is an equidigital number, since it uses as much as digits as its factorization.

2199552961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 49.

The square root of 2199552961 is about 46899.3919043733. The cubic root of 2199552961 is about 1300.5033476869.

The spelling of 2199552961 in words is "two billion, one hundred ninety-nine million, five hundred fifty-two thousand, nine hundred sixty-one".