1822572445 has 4 divisors (see below), whose sum is σ = 2187086940. Its totient is φ = 1458057952.

The previous prime is 1822572421. The next prime is 1822572449. The reversal of 1822572445 is 5442752281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5442752281 = 37 ⋅147101413.

It can be written as a sum of positive squares in 2 ways, for example, as 200335716 + 1622236729 = 14154^2 + 40277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1822572445 - 2⁵ = 1822572413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1822572398 and 1822572407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822572449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182257240 + ... + 182257249.

It is an arithmetic number, because the mean of its divisors is an integer number (546771735).

Almost surely, 2^1822572445 is an apocalyptic number.

It is an amenable number.

1822572445 is a deficient number, since it is larger than the sum of its proper divisors (364514495).

1822572445 is an equidigital number, since it uses as much as digits as its factorization.

1822572445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364514494.

The product of its digits is 179200, while the sum is 40.

The square root of 1822572445 is about 42691.5968897862. The cubic root of 1822572445 is about 1221.5041121079.

The spelling of 1822572445 in words is "one billion, eight hundred twenty-two million, five hundred seventy-two thousand, four hundred forty-five".