451963980 has 72 divisors (see below), whose sum is σ = 1476423312. Its totient is φ = 111252096.

The previous prime is 451963979. The next prime is 451963997. The reversal of 451963980 is 89369154.

It is a happy number.

451963980 is a `hidden beast` number, since 4 + 5 + 1 + 9 + 639 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 94234 + ... + 98913.

Almost surely, 2^451963980 is an apocalyptic number.

It is an amenable number.

451963980 is an abundant number, since it is smaller than the sum of its proper divisors (1024459332).

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

451963980 is a wasteful number, since it uses less digits than its factorization.

451963980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193175 (or 193170 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 451963980 is about 21259.4444894499. Note that the first 4 decimals coincide. The cubic root of 451963980 is about 767.4226414266.

The spelling of 451963980 in words is "four hundred fifty-one million, nine hundred sixty-three thousand, nine hundred eighty".