8372821537 has 8 divisors (see below), whose sum is σ = 8753575104. Its totient is φ = 7993461168.

The previous prime is 8372821531. The next prime is 8372821547. The reversal of 8372821537 is 7351282738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8372821537 - 2³ = 8372821529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8372821531) 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 7 ways as a sum of consecutive naturals, for example, 335998 + ... + 360055.

It is an arithmetic number, because the mean of its divisors is an integer number (1094196888).

Almost surely, 2^8372821537 is an apocalyptic number.

It is an amenable number.

8372821537 is a deficient number, since it is larger than the sum of its proper divisors (380753567).

8372821537 is a wasteful number, since it uses less digits than its factorization.

8372821537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696599.

The product of its digits is 564480, while the sum is 46.

The square root of 8372821537 is about 91503.1230997063. The cubic root of 8372821537 is about 2030.5979566998.

The spelling of 8372821537 in words is "eight billion, three hundred seventy-two million, eight hundred twenty-one thousand, five hundred thirty-seven".