2195891494 has 8 divisors (see below), whose sum is σ = 3297163968. Its totient is φ = 1096836840.

The previous prime is 2195891483. The next prime is 2195891497. The reversal of 2195891494 is 4941985912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195891497) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 551977 + ... + 555940.

It is an arithmetic number, because the mean of its divisors is an integer number (412145496).

Almost surely, 2^2195891494 is an apocalyptic number.

2195891494 is a deficient number, since it is larger than the sum of its proper divisors (1101272474).

2195891494 is a wasteful number, since it uses less digits than its factorization.

2195891494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108910.

The product of its digits is 933120, while the sum is 52.

The square root of 2195891494 is about 46860.3403103307. The cubic root of 2195891494 is about 1299.7813229810.

The spelling of 2195891494 in words is "two billion, one hundred ninety-five million, eight hundred ninety-one thousand, four hundred ninety-four".