451618480 has 40 divisors (see below), whose sum is σ = 1053651312. Its totient is φ = 180021504.

The previous prime is 451618471. The next prime is 451618487. The reversal of 451618480 is 84816154.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (451618487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13807 + ... + 33073.

Almost surely, 2^451618480 is an apocalyptic number.

451618480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451618480 is an abundant number, since it is smaller than the sum of its proper divisors (602032832).

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

451618480 is a wasteful number, since it uses less digits than its factorization.

451618480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19573 (or 19567 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 451618480 is about 21251.3171356507. The cubic root of 451618480 is about 767.2270416845.

The spelling of 451618480 in words is "four hundred fifty-one million, six hundred eighteen thousand, four hundred eighty".