2897190209 has 2 divisors, whose sum is σ = 2897190210. Its totient is φ = 2897190208.

The previous prime is 2897190187. The next prime is 2897190223. The reversal of 2897190209 is 9020917982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929669184 + 967521025 = 43928^2 + 31105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2897190209 - 2²⁸ = 2628754753 is a prime.

It is a super-2 number, since 2×2897190209² = 16787422214250927362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2897190229) 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, 1448595104 + 1448595105.

It is an arithmetic number, because the mean of its divisors is an integer number (1448595105).

Almost surely, 2^2897190209 is an apocalyptic number.

It is an amenable number.

2897190209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2897190209 is an equidigital number, since it uses as much as digits as its factorization.

2897190209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 2897190209 is about 53825.5534945996. The cubic root of 2897190209 is about 1425.5824370299.

The spelling of 2897190209 in words is "two billion, eight hundred ninety-seven million, one hundred ninety thousand, two hundred nine".