5451191982 has 48 divisors (see below), whose sum is σ = 12216623328. Its totient is φ = 1755509760.

The previous prime is 5451191971. The next prime is 5451192053. The reversal of 5451191982 is 2891911545.

5451191982 is a `hidden beast` number, since 5 + 451 + 1 + 9 + 198 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40158 + ... + 111870.

It is an arithmetic number, because the mean of its divisors is an integer number (254512986).

Almost surely, 2^5451191982 is an apocalyptic number.

5451191982 is an abundant number, since it is smaller than the sum of its proper divisors (6765431346).

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

5451191982 is a wasteful number, since it uses less digits than its factorization.

5451191982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71865 (or 71862 counting only the distinct ones).

The product of its digits is 129600, while the sum is 45.

The square root of 5451191982 is about 73832.1879805820. The cubic root of 5451191982 is about 1759.9371514661.

The spelling of 5451191982 in words is "five billion, four hundred fifty-one million, one hundred ninety-one thousand, nine hundred eighty-two".