8145386723 has 4 divisors (see below), whose sum is σ = 8229359880. Its totient is φ = 8061413568.

The previous prime is 8145386701. The next prime is 8145386731. The reversal of 8145386723 is 3276835418.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8145386723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8145388723) 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 3 ways as a sum of consecutive naturals, for example, 41986433 + ... + 41986626.

It is an arithmetic number, because the mean of its divisors is an integer number (2057339970).

Almost surely, 2^8145386723 is an apocalyptic number.

8145386723 is a deficient number, since it is larger than the sum of its proper divisors (83973157).

8145386723 is an equidigital number, since it uses as much as digits as its factorization.

8145386723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83973156.

The product of its digits is 967680, while the sum is 47.

The square root of 8145386723 is about 90251.7962314324. The cubic root of 8145386723 is about 2012.0428989920.

The spelling of 8145386723 in words is "eight billion, one hundred forty-five million, three hundred eighty-six thousand, seven hundred twenty-three".