2194807440 has 640 divisors, whose sum is σ = 8858861568. Its totient is φ = 437944320.

The previous prime is 2194807421. The next prime is 2194807463. The reversal of 2194807440 is 447084912.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 32758287 + ... + 32758353.

Almost surely, 2^2194807440 is an apocalyptic number.

2194807440 is a gapful number since it is divisible by the number (20) 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 2194807440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4429430784).

2194807440 is an abundant number, since it is smaller than the sum of its proper divisors (6664054128).

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

2194807440 is a wasteful number, since it uses less digits than its factorization.

2194807440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 2194807440 is about 46848.7720223273. The cubic root of 2194807440 is about 1299.5673984653.

The spelling of 2194807440 in words is "two billion, one hundred ninety-four million, eight hundred seven thousand, four hundred forty".