4578245991 has 24 divisors (see below), whose sum is σ = 7381984896. Its totient is φ = 2710164240.

The previous prime is 4578245989. The next prime is 4578246041. The reversal of 4578245991 is 1995428754.

It is a happy number.

4578245991 is a `hidden beast` number, since 45 + 7 + 8 + 2 + 4 + 599 + 1 = 666.

It is not a de Polignac number, because 4578245991 - 2¹ = 4578245989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4578245941) by changing a digit.

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, 533475 + ... + 541988.

It is an arithmetic number, because the mean of its divisors is an integer number (307582704).

Almost surely, 2^4578245991 is an apocalyptic number.

4578245991 is a deficient number, since it is larger than the sum of its proper divisors (2803738905).

4578245991 is a wasteful number, since it uses less digits than its factorization.

4578245991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075523 (or 1075520 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 4578245991 is about 67662.7370936175. The cubic root of 4578245991 is about 1660.4776763175.

The spelling of 4578245991 in words is "four billion, five hundred seventy-eight million, two hundred forty-five thousand, nine hundred ninety-one".