450873681 has 4 divisors (see below), whose sum is σ = 601164912. Its totient is φ = 300582452.

The previous prime is 450873671. The next prime is 450873697. The reversal of 450873681 is 186378054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 450873681 - 2⁵ = 450873649 is a prime.

It is a super-2 number, since 2×450873681² = 406574152436979522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (450873611) by changing a digit.

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, 75145611 + ... + 75145616.

It is an arithmetic number, because the mean of its divisors is an integer number (150291228).

Almost surely, 2^450873681 is an apocalyptic number.

It is an amenable number.

450873681 is a deficient number, since it is larger than the sum of its proper divisors (150291231).

450873681 is a wasteful number, since it uses less digits than its factorization.

450873681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150291230.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 450873681 is about 21233.7863086167. The cubic root of 450873681 is about 766.8050451124.

The spelling of 450873681 in words is "four hundred fifty million, eight hundred seventy-three thousand, six hundred eighty-one".