2643909195 has 32 divisors (see below), whose sum is σ = 4302950400. Its totient is φ = 1386013824.

The previous prime is 2643909157. The next prime is 2643909197. The reversal of 2643909195 is 5919093462.

It is not a de Polignac number, because 2643909195 - 2¹⁸ = 2643647051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2643909197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266494 + ... + 276236.

It is an arithmetic number, because the mean of its divisors is an integer number (134467200).

Almost surely, 2^2643909195 is an apocalyptic number.

2643909195 is a deficient number, since it is larger than the sum of its proper divisors (1659041205).

2643909195 is a wasteful number, since it uses less digits than its factorization.

2643909195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10059.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 2643909195 is about 51418.9575448589. The cubic root of 2643909195 is about 1382.7664861308.

The spelling of 2643909195 in words is "two billion, six hundred forty-three million, nine hundred nine thousand, one hundred ninety-five".