2194949904 has 120 divisors (see below), whose sum is σ = 6680108160. Its totient is φ = 619137792.

The previous prime is 2194949873. The next prime is 2194949909. The reversal of 2194949904 is 4099494912.

It is not an unprimeable number, because it can be changed into a prime (2194949909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179902 + ... + 191714.

It is an arithmetic number, because the mean of its divisors is an integer number (55667568).

Almost surely, 2^2194949904 is an apocalyptic number.

2194949904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194949904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3340054080).

2194949904 is an abundant number, since it is smaller than the sum of its proper divisors (4485158256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2194949904 is a wasteful number, since it uses less digits than its factorization.

2194949904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11917 (or 11904 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 2194949904 is about 46850.2924644020. The cubic root of 2194949904 is about 1299.5955159759.

The spelling of 2194949904 in words is "two billion, one hundred ninety-four million, nine hundred forty-nine thousand, nine hundred four".