2170458897 has 4 divisors (see below), whose sum is σ = 2893945200. Its totient is φ = 1446972596.

The previous prime is 2170458889. The next prime is 2170458907. The reversal of 2170458897 is 7988540712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2170458897 - 2³ = 2170458889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2170458827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361743147 + ... + 361743152.

It is an arithmetic number, because the mean of its divisors is an integer number (723486300).

Almost surely, 2^2170458897 is an apocalyptic number.

It is an amenable number.

2170458897 is a deficient number, since it is larger than the sum of its proper divisors (723486303).

2170458897 is an equidigital number, since it uses as much as digits as its factorization.

2170458897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723486302.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 2170458897 is about 46588.1840921064. The cubic root of 2170458897 is about 1294.7438454211.

It can be divided in two parts, 21704 and 58897, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 2170458897 in words is "two billion, one hundred seventy million, four hundred fifty-eight thousand, eight hundred ninety-seven".