2194795640 has 64 divisors (see below), whose sum is σ = 5228560800. Its totient is φ = 826854912.

The previous prime is 2194795639. The next prime is 2194795651. The reversal of 2194795640 is 465974912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123134 + ... + 139826.

Almost surely, 2^2194795640 is an apocalyptic number.

2194795640 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 2194795640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614280400).

2194795640 is an abundant number, since it is smaller than the sum of its proper divisors (3033765160).

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

2194795640 is a wasteful number, since it uses less digits than its factorization.

2194795640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16896 (or 16892 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 2194795640 is about 46848.6460850258. The cubic root of 2194795640 is about 1299.5650694952.

The spelling of 2194795640 in words is "two billion, one hundred ninety-four million, seven hundred ninety-five thousand, six hundred forty".