853743745 has 4 divisors (see below), whose sum is σ = 1024492500. Its totient is φ = 682994992.

The previous prime is 853743677. The next prime is 853743749. The reversal of 853743745 is 547347358.

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: 547347358 = 2 ⋅273673679.

It can be written as a sum of positive squares in 2 ways, for example, as 94245264 + 759498481 = 9708^2 + 27559^2 .

It is a cyclic number.

It is not a de Polignac number, because 853743745 - 2¹¹ = 853741697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 853743695 and 853743704.

It is not an unprimeable number, because it can be changed into a prime (853743749) 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, 85374370 + ... + 85374379.

It is an arithmetic number, because the mean of its divisors is an integer number (256123125).

Almost surely, 2^853743745 is an apocalyptic number.

It is an amenable number.

853743745 is a deficient number, since it is larger than the sum of its proper divisors (170748755).

853743745 is a wasteful number, since it uses less digits than its factorization.

853743745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170748754.

The product of its digits is 1411200, while the sum is 46.

The square root of 853743745 is about 29218.8936306630. The cubic root of 853743745 is about 948.6569183372.

The spelling of 853743745 in words is "eight hundred fifty-three million, seven hundred forty-three thousand, seven hundred forty-five".