814516945 has 12 divisors (see below), whose sum is σ = 1074355380. Its totient is φ = 592375520.

The previous prime is 814516943. The next prime is 814516951. The reversal of 814516945 is 549615418.

It can be written as a sum of positive squares in 2 ways, for example, as 572932096 + 241584849 = 23936^2 + 15543^2 .

It is not a de Polignac number, because 814516945 - 2¹ = 814516943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (814516943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672550 + ... + 673759.

It is an arithmetic number, because the mean of its divisors is an integer number (89529615).

Almost surely, 2^814516945 is an apocalyptic number.

It is an amenable number.

814516945 is a deficient number, since it is larger than the sum of its proper divisors (259838435).

814516945 is a wasteful number, since it uses less digits than its factorization.

814516945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346336 (or 1346325 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 814516945 is about 28539.7432539257. The cubic root of 814516945 is about 933.8992814007.

The spelling of 814516945 in words is "eight hundred fourteen million, five hundred sixteen thousand, nine hundred forty-five".