451985492 has 12 divisors (see below), whose sum is σ = 903971040. Its totient is φ = 193708056.

The previous prime is 451985473. The next prime is 451985497. The reversal of 451985492 is 294589154.

It is a happy number.

451985492 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451985497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8071142 + ... + 8071197.

It is an arithmetic number, because the mean of its divisors is an integer number (75330920).

Almost surely, 2^451985492 is an apocalyptic number.

It is an amenable number.

451985492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

451985492 is a wasteful number, since it uses less digits than its factorization.

451985492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16142350 (or 16142348 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 451985492 is about 21259.9504232724. The cubic root of 451985492 is about 767.4348168319.

The spelling of 451985492 in words is "four hundred fifty-one million, nine hundred eighty-five thousand, four hundred ninety-two".