2194919505 has 64 divisors (see below), whose sum is σ = 4114022400. Its totient is φ = 1108658880.

The previous prime is 2194919497. The next prime is 2194919527. The reversal of 2194919505 is 5059194912.

It is not a de Polignac number, because 2194919505 - 2³ = 2194919497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191116 + ... + 202274.

It is an arithmetic number, because the mean of its divisors is an integer number (64281600).

Almost surely, 2^2194919505 is an apocalyptic number.

It is an amenable number.

2194919505 is a deficient number, since it is larger than the sum of its proper divisors (1919102895).

2194919505 is a wasteful number, since it uses less digits than its factorization.

2194919505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251 (or 11245 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 2194919505 is about 46849.9680362751. The cubic root of 2194919505 is about 1299.5895163573.

The spelling of 2194919505 in words is "two billion, one hundred ninety-four million, nine hundred nineteen thousand, five hundred five".