2243192878 has 4 divisors (see below), whose sum is σ = 3364789320. Its totient is φ = 1121596438.

The previous prime is 2243192869. The next prime is 2243192879. The reversal of 2243192878 is 8782913422.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243192879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560798218 + ... + 560798221.

It is an arithmetic number, because the mean of its divisors is an integer number (841197330).

Almost surely, 2^2243192878 is an apocalyptic number.

2243192878 is a deficient number, since it is larger than the sum of its proper divisors (1121596442).

2243192878 is a wasteful number, since it uses less digits than its factorization.

2243192878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121596441.

The product of its digits is 387072, while the sum is 46.

The square root of 2243192878 is about 47362.3571837382. The cubic root of 2243192878 is about 1309.0479024840.

The spelling of 2243192878 in words is "two billion, two hundred forty-three million, one hundred ninety-two thousand, eight hundred seventy-eight".