454503816 has 96 divisors (see below), whose sum is σ = 1331180760. Its totient is φ = 139262976.

The previous prime is 454503787. The next prime is 454503839. The reversal of 454503816 is 618305454.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 102941316 + 351562500 = 10146^2 + 18750^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258396 + ... + 260148.

Almost surely, 2^454503816 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 454503816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665590380).

454503816 is an abundant number, since it is smaller than the sum of its proper divisors (876676944).

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

454503816 is a wasteful number, since it uses less digits than its factorization.

454503816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 454503816 is about 21319.0951027477. The cubic root of 454503816 is about 768.8574813829.

The spelling of 454503816 in words is "four hundred fifty-four million, five hundred three thousand, eight hundred sixteen".