8381428923 has 16 divisors (see below), whose sum is σ = 12933370880. Its totient is φ = 4728761856.

The previous prime is 8381428901. The next prime is 8381428967. The reversal of 8381428923 is 3298241838.

It is not a de Polignac number, because 8381428923 - 2⁹ = 8381428411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8381428423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2524390 + ... + 2527707.

It is an arithmetic number, because the mean of its divisors is an integer number (808335680).

Almost surely, 2^8381428923 is an apocalyptic number.

8381428923 is a deficient number, since it is larger than the sum of its proper divisors (4551941957).

8381428923 is a wasteful number, since it uses less digits than its factorization.

8381428923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052186.

The product of its digits is 663552, while the sum is 48.

The square root of 8381428923 is about 91550.1443090070. The cubic root of 8381428923 is about 2031.2935467707.

The spelling of 8381428923 in words is "eight billion, three hundred eighty-one million, four hundred twenty-eight thousand, nine hundred twenty-three".