8542581332 has 6 divisors (see below), whose sum is σ = 14949517338. Its totient is φ = 4271290664.

The previous prime is 8542581323. The next prime is 8542581343. The reversal of 8542581332 is 2331852458.

It can be written as a sum of positive squares in only one way, i.e., 4287106576 + 4255474756 = 65476^2 + 65234^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8542581332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067822663 + ... + 1067822670.

It is an arithmetic number, because the mean of its divisors is an integer number (2491586223).

Almost surely, 2^8542581332 is an apocalyptic number.

It is an amenable number.

8542581332 is a deficient number, since it is larger than the sum of its proper divisors (6406936006).

8542581332 is a wasteful number, since it uses less digits than its factorization.

8542581332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135645337 (or 2135645335 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 8542581332 is about 92426.0857766897. The cubic root of 8542581332 is about 2044.2297645112.

The spelling of 8542581332 in words is "eight billion, five hundred forty-two million, five hundred eighty-one thousand, three hundred thirty-two".