450161636 has 12 divisors (see below), whose sum is σ = 789334140. Its totient is φ = 224637600.

The previous prime is 450161627. The next prime is 450161651. The reversal of 450161636 is 636161054.

It can be written as a sum of positive squares in 2 ways, for example, as 185123236 + 265038400 = 13606^2 + 16280^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108515 + ... + 112586.

It is an arithmetic number, because the mean of its divisors is an integer number (65777845).

Almost surely, 2^450161636 is an apocalyptic number.

It is an amenable number.

450161636 is a deficient number, since it is larger than the sum of its proper divisors (339172504).

450161636 is a wasteful number, since it uses less digits than its factorization.

450161636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221614 (or 221612 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 450161636 is about 21217.0128906027. The cubic root of 450161636 is about 766.4011719226.

The spelling of 450161636 in words is "four hundred fifty million, one hundred sixty-one thousand, six hundred thirty-six".