2194380072 has 80 divisors (see below), whose sum is σ = 6469821600. Its totient is φ = 692958240.

The previous prime is 2194380061. The next prime is 2194380079. The reversal of 2194380072 is 2700834912.

2194380072 is a `hidden beast` number, since 219 + 438 + 0 + 0 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2194380079) 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 19 ways as a sum of consecutive naturals, for example, 76804 + ... + 101427.

It is an arithmetic number, because the mean of its divisors is an integer number (80872770).

Almost surely, 2^2194380072 is an apocalyptic number.

It is an amenable number.

2194380072 is an abundant number, since it is smaller than the sum of its proper divisors (4275441528).

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

2194380072 is a wasteful number, since it uses less digits than its factorization.

2194380072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178268 (or 178255 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2194380072 is about 46844.2106561739. The cubic root of 2194380072 is about 1299.4830433700.

The spelling of 2194380072 in words is "two billion, one hundred ninety-four million, three hundred eighty thousand, seventy-two".