8145918789 has 8 divisors (see below), whose sum is σ = 10861999680. Its totient is φ = 5430225216.

The previous prime is 8145918749. The next prime is 8145918799. The reversal of 8145918789 is 9878195418.

It is a happy number.

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

It is not a de Polignac number, because 8145918789 - 2⁷ = 8145918661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145918749) 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, 43569 + ... + 134870.

It is an arithmetic number, because the mean of its divisors is an integer number (1357749960).

Almost surely, 2^8145918789 is an apocalyptic number.

It is an amenable number.

8145918789 is a deficient number, since it is larger than the sum of its proper divisors (2716080891).

8145918789 is a wasteful number, since it uses less digits than its factorization.

8145918789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193659.

The product of its digits is 5806080, while the sum is 60.

The square root of 8145918789 is about 90254.7438587025. The cubic root of 8145918789 is about 2012.0867076879.

The spelling of 8145918789 in words is "eight billion, one hundred forty-five million, nine hundred eighteen thousand, seven hundred eighty-nine".