8921640375 has 128 divisors (see below), whose sum is σ = 17613573120. Its totient is φ = 4440384000.

The previous prime is 8921640367. The next prime is 8921640379. The reversal of 8921640375 is 5730461298.

8921640375 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8921640375 - 2³ = 8921640367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

8921640375 is strictly pandigital in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 8921640375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921640379) 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 127 ways as a sum of consecutive naturals, for example, 7515532 + ... + 7516718.

It is an arithmetic number, because the mean of its divisors is an integer number (137606040).

It is a 1-persistent number, because it is pandigital, but 2⋅8921640375 = 17843280750 is not.

Almost surely, 2^8921640375 is an apocalyptic number.

8921640375 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8921640375 is a deficient number, since it is larger than the sum of its proper divisors (8691932745).

8921640375 is a wasteful number, since it uses less digits than its factorization.

8921640375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 8921640375 is about 94454.4354437630. The cubic root of 8921640375 is about 2074.0293810488.

The spelling of 8921640375 in words is "eight billion, nine hundred twenty-one million, six hundred forty thousand, three hundred seventy-five".