2170371145 has 4 divisors (see below), whose sum is σ = 2604445380. Its totient is φ = 1736296912.

The previous prime is 2170371143. The next prime is 2170371173. The reversal of 2170371145 is 5411730712.

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 229704336 + 1940666809 = 15156^2 + 44053^2 .

It is a cyclic number.

It is not a de Polignac number, because 2170371145 - 2¹ = 2170371143 is a prime.

It is a super-2 number, since 2×2170371145² = 9421021814097222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2170371143) 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, 217037110 + ... + 217037119.

It is an arithmetic number, because the mean of its divisors is an integer number (651111345).

Almost surely, 2^2170371145 is an apocalyptic number.

It is an amenable number.

2170371145 is a deficient number, since it is larger than the sum of its proper divisors (434074235).

2170371145 is an equidigital number, since it uses as much as digits as its factorization.

2170371145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434074234.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 2170371145 is about 46587.2422987238. The cubic root of 2170371145 is about 1294.7263962857.

The spelling of 2170371145 in words is "two billion, one hundred seventy million, three hundred seventy-one thousand, one hundred forty-five".