453945636 has 81 divisors (see below), whose sum is σ = 1187248881. Its totient is φ = 146244384.

The previous prime is 453945629. The next prime is 453945659. The reversal of 453945636 is 636549354.

The square root of 453945636 is 21306.

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

453945636 is a `hidden beast` number, since 4 + 5 + 3 + 9 + 4 + 5 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 327248100 + 126697536 = 18090^2 + 11256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 453945591 and 453945600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6775275 + ... + 6775341.

Almost surely, 2^453945636 is an apocalyptic number.

453945636 is the 21306-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 453945636

453945636 is an abundant number, since it is smaller than the sum of its proper divisors (733303245).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

453945636 is a wasteful number, since it uses less digits than its factorization.

453945636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 125 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The cubic root of 453945636 is about 768.5426056442.

Multiplying 453945636 by its product of digits (1166400), we get a square (529482189830400 = 23010480²).

It can be divided in two parts, 453945 and 636, that added together give a triangular number (454581 = T₉₅₃).

The spelling of 453945636 in words is "four hundred fifty-three million, nine hundred forty-five thousand, six hundred thirty-six".