4564639542 has 16 divisors (see below), whose sum is σ = 9130306752. Its totient is φ = 1521375240.

The previous prime is 4564639537. The next prime is 4564639549. The reversal of 4564639542 is 2459364654.

It is a junction number, because it is equal to n+sod(n) for n = 4564639491 and 4564639500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4564639549) 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, 22617 + ... + 98187.

It is an arithmetic number, because the mean of its divisors is an integer number (570644172).

Almost surely, 2^4564639542 is an apocalyptic number.

4564639542 is an abundant number, since it is smaller than the sum of its proper divisors (4565667210).

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

4564639542 is a wasteful number, since it uses less digits than its factorization.

4564639542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85643.

The product of its digits is 3110400, while the sum is 48.

The square root of 4564639542 is about 67562.1161746729. The cubic root of 4564639542 is about 1658.8310759917.

The spelling of 4564639542 in words is "four billion, five hundred sixty-four million, six hundred thirty-nine thousand, five hundred forty-two".