2897190217 has 4 divisors (see below), whose sum is σ = 2897465220. Its totient is φ = 2896915216.

The previous prime is 2897190209. The next prime is 2897190223. The reversal of 2897190217 is 7120917982.

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 727866441 + 2169323776 = 26979^2 + 46576^2 .

It is a cyclic number.

It is not a de Polignac number, because 2897190217 - 2³ = 2897190209 is a prime.

It is a super-2 number, since 2×2897190217² = 16787422306961014178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2897190017) 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, 121042 + ... + 142987.

It is an arithmetic number, because the mean of its divisors is an integer number (724366305).

Almost surely, 2^2897190217 is an apocalyptic number.

It is an amenable number.

2897190217 is a deficient number, since it is larger than the sum of its proper divisors (275003).

2897190217 is a wasteful number, since it uses less digits than its factorization.

2897190217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275002.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 2897190217 is about 53825.5535689137. The cubic root of 2897190217 is about 1425.5824383421.

The spelling of 2897190217 in words is "two billion, eight hundred ninety-seven million, one hundred ninety thousand, two hundred seventeen".