2209156913 has 2 divisors, whose sum is σ = 2209156914. Its totient is φ = 2209156912.

The previous prime is 2209156853. The next prime is 2209156927. The reversal of 2209156913 is 3196519022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1952932864 + 256224049 = 44192^2 + 16007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209156913 - 2¹⁰ = 2209155889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2209156973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104578456 + 1104578457.

It is an arithmetic number, because the mean of its divisors is an integer number (1104578457).

Almost surely, 2^2209156913 is an apocalyptic number.

It is an amenable number.

2209156913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209156913 is an equidigital number, since it uses as much as digits as its factorization.

2209156913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 2209156913 is about 47001.6692575913. The cubic root of 2209156913 is about 1302.3934040623.

The spelling of 2209156913 in words is "two billion, two hundred nine million, one hundred fifty-six thousand, nine hundred thirteen".