2193076945 has 4 divisors (see below), whose sum is σ = 2631692340. Its totient is φ = 1754461552.

The previous prime is 2193076939. The next prime is 2193076967. The reversal of 2193076945 is 5496703912.

It is a happy number.

2193076945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 840014289 + 1353062656 = 28983^2 + 36784^2 .

It is a cyclic number.

It is not a de Polignac number, because 2193076945 - 2³ = 2193076937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2193076895 and 2193076904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219307690 + ... + 219307699.

It is an arithmetic number, because the mean of its divisors is an integer number (657923085).

Almost surely, 2^2193076945 is an apocalyptic number.

It is an amenable number.

2193076945 is a deficient number, since it is larger than the sum of its proper divisors (438615395).

2193076945 is an equidigital number, since it uses as much as digits as its factorization.

2193076945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438615394.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 2193076945 is about 46830.2994331661. The cubic root of 2193076945 is about 1299.2257608726.

The spelling of 2193076945 in words is "two billion, one hundred ninety-three million, seventy-six thousand, nine hundred forty-five".