316526636449 has 3 divisors (see below), whose sum is σ = 316527199057. Its totient is φ = 316526073842.

The previous prime is 316526636443. The next prime is 316526636471. The reversal of 316526636449 is 944636625613.

The square root of 316526636449 is 562607.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 944636625613 = 27281 ⋅34626173.

It is not a de Polignac number, because 316526636449 - 2¹¹ = 316526634401 is a prime.

It is a super-2 number, since 2×316526636449² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 316526636449.

It is not an unprimeable number, because it can be changed into a prime (316526636443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 281304 + ... + 843910.

Almost surely, 2^316526636449 is an apocalyptic number.

316526636449 is the 562607-th square number.

316526636449 is the 281304-th centered octagonal number.

It is an amenable number.

316526636449 is a deficient number, since it is larger than the sum of its proper divisors (562608).

316526636449 is an frugal number, since it uses more digits than its factorization.

316526636449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125214 (or 562607 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 55.

It can be divided in two parts, 3165266 and 36449, that added together give a triangular number (3201715 = T₂₅₃₀).

The spelling of 316526636449 in words is "three hundred sixteen billion, five hundred twenty-six million, six hundred thirty-six thousand, four hundred forty-nine".