451945536 has 112 divisors (see below), whose sum is σ = 1375647744. Its totient is φ = 128272896.

The previous prime is 451945531. The next prime is 451945579. The reversal of 451945536 is 635549154.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (451945531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218041 + ... + 220103.

Almost surely, 2^451945536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451945536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687823872).

451945536 is an abundant number, since it is smaller than the sum of its proper divisors (923702208).

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

451945536 is a wasteful number, since it uses less digits than its factorization.

451945536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2238 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The square root of 451945536 is about 21259.0107013473. The cubic root of 451945536 is about 767.4122021465.

The spelling of 451945536 in words is "four hundred fifty-one million, nine hundred forty-five thousand, five hundred thirty-six".