2643090194 has 24 divisors (see below), whose sum is σ = 4120850700. Its totient is φ = 1271362080.

The previous prime is 2643090187. The next prime is 2643090199. The reversal of 2643090194 is 4910903462.

It can be written as a sum of positive squares in 2 ways, for example, as 2506504225 + 136585969 = 50065^2 + 11687^2 .

It is not an unprimeable number, because it can be changed into a prime (2643090199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328532 + ... + 336480.

Almost surely, 2^2643090194 is an apocalyptic number.

2643090194 is a deficient number, since it is larger than the sum of its proper divisors (1477760506).

2643090194 is a wasteful number, since it uses less digits than its factorization.

2643090194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8186 (or 8155 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 2643090194 is about 51410.9929295282. The cubic root of 2643090194 is about 1382.6236920069.

The spelling of 2643090194 in words is "two billion, six hundred forty-three million, ninety thousand, one hundred ninety-four".