2194709790 has 128 divisors (see below), whose sum is σ = 6692216832. Its totient is φ = 448104960.

The previous prime is 2194709753. The next prime is 2194709813. The reversal of 2194709790 is 979074912.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71664 + ... + 97596.

It is an arithmetic number, because the mean of its divisors is an integer number (52282944).

Almost surely, 2^2194709790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194709790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3346108416).

2194709790 is an abundant number, since it is smaller than the sum of its proper divisors (4497507042).

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

2194709790 is a wasteful number, since it uses less digits than its factorization.

2194709790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25994.

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 2194709790 is about 46847.7298276021. The cubic root of 2194709790 is about 1299.5481249995.

The spelling of 2194709790 in words is "two billion, one hundred ninety-four million, seven hundred nine thousand, seven hundred ninety".