8541915987 has 96 divisors (see below), whose sum is σ = 13423083520. Its totient is φ = 4819953600.

The previous prime is 8541915959. The next prime is 8541915989. The reversal of 8541915987 is 7895191458.

8541915987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8541915987 - 2⁶ = 8541915923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8541915989) by changing a digit.

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 in 95 ways as a sum of consecutive naturals, for example, 61452564 + ... + 61452702.

Almost surely, 2^8541915987 is an apocalyptic number.

8541915987 is a deficient number, since it is larger than the sum of its proper divisors (4881167533).

8541915987 is a wasteful number, since it uses less digits than its factorization.

8541915987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 354 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 57.

The square root of 8541915987 is about 92422.4863710125. The cubic root of 8541915987 is about 2044.1766910388.

The spelling of 8541915987 in words is "eight billion, five hundred forty-one million, nine hundred fifteen thousand, nine hundred eighty-seven".