2645395197 has 4 divisors (see below), whose sum is σ = 3527193600. Its totient is φ = 1763596796.

The previous prime is 2645395189. The next prime is 2645395219. The reversal of 2645395197 is 7915935462.

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 2645395197 - 2³ = 2645395189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645395127) 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, 440899197 + ... + 440899202.

It is an arithmetic number, because the mean of its divisors is an integer number (881798400).

Almost surely, 2^2645395197 is an apocalyptic number.

It is an amenable number.

2645395197 is a deficient number, since it is larger than the sum of its proper divisors (881798403).

2645395197 is an equidigital number, since it uses as much as digits as its factorization.

2645395197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881798402.

The product of its digits is 2041200, while the sum is 51.

The square root of 2645395197 is about 51433.4054579317. The cubic root of 2645395197 is about 1383.0254976637.

The spelling of 2645395197 in words is "two billion, six hundred forty-five million, three hundred ninety-five thousand, one hundred ninety-seven".