2170345641 has 4 divisors (see below), whose sum is σ = 2893794192. Its totient is φ = 1446897092.

The previous prime is 2170345603. The next prime is 2170345721. The reversal of 2170345641 is 1465430712.

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 2170345641 - 2⁶ = 2170345577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2170345141) 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, 361724271 + ... + 361724276.

It is an arithmetic number, because the mean of its divisors is an integer number (723448548).

Almost surely, 2^2170345641 is an apocalyptic number.

It is an amenable number.

2170345641 is a deficient number, since it is larger than the sum of its proper divisors (723448551).

2170345641 is an equidigital number, since it uses as much as digits as its factorization.

2170345641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723448550.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2170345641 is about 46586.9685749137. The cubic root of 2170345641 is about 1294.7213248288.

The spelling of 2170345641 in words is "two billion, one hundred seventy million, three hundred forty-five thousand, six hundred forty-one".