1575674645 has 4 divisors (see below), whose sum is σ = 1890809580. Its totient is φ = 1260539712.

The previous prime is 1575674641. The next prime is 1575674647. The reversal of 1575674645 is 5464765751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5464765751 = 263 ⋅20778577.

It can be written as a sum of positive squares in 2 ways, for example, as 576672196 + 999002449 = 24014^2 + 31607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1575674645 - 2² = 1575674641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1575674593 and 1575674602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575674641) 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, 157567460 + ... + 157567469.

It is an arithmetic number, because the mean of its divisors is an integer number (472702395).

Almost surely, 2^1575674645 is an apocalyptic number.

It is an amenable number.

1575674645 is a deficient number, since it is larger than the sum of its proper divisors (315134935).

1575674645 is an equidigital number, since it uses as much as digits as its factorization.

1575674645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315134934.

The product of its digits is 3528000, while the sum is 50.

The square root of 1575674645 is about 39694.7684840207. The cubic root of 1575674645 is about 1163.6494865084.

The spelling of 1575674645 in words is "one billion, five hundred seventy-five million, six hundred seventy-four thousand, six hundred forty-five".