8442148591 has 4 divisors (see below), whose sum is σ = 8638477672. Its totient is φ = 8245819512.

The previous prime is 8442148577. The next prime is 8442148657. The reversal of 8442148591 is 1958412448.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8442148591 - 2¹¹ = 8442146543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442148511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98164476 + ... + 98164561.

It is an arithmetic number, because the mean of its divisors is an integer number (2159619418).

Almost surely, 2^8442148591 is an apocalyptic number.

8442148591 is a deficient number, since it is larger than the sum of its proper divisors (196329081).

8442148591 is a wasteful number, since it uses less digits than its factorization.

8442148591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196329080.

The product of its digits is 368640, while the sum is 46.

The square root of 8442148591 is about 91881.1655944786. The cubic root of 8442148591 is about 2036.1870169114.

The spelling of 8442148591 in words is "eight billion, four hundred forty-two million, one hundred forty-eight thousand, five hundred ninety-one".