8154320389 has 4 divisors (see below), whose sum is σ = 8154629440. Its totient is φ = 8154011340.

The previous prime is 8154320371. The next prime is 8154320417. The reversal of 8154320389 is 9830234518.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8154320389 - 2²¹ = 8152223237 is a prime.

It is a super-2 number, since 2×8154320389² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8154320329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110829 + ... + 169090.

It is an arithmetic number, because the mean of its divisors is an integer number (2038657360).

Almost surely, 2^8154320389 is an apocalyptic number.

It is an amenable number.

8154320389 is a deficient number, since it is larger than the sum of its proper divisors (309051).

8154320389 is a wasteful number, since it uses less digits than its factorization.

8154320389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309050.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 8154320389 is about 90301.2756775894. The cubic root of 8154320389 is about 2012.7782171282.

The spelling of 8154320389 in words is "eight billion, one hundred fifty-four million, three hundred twenty thousand, three hundred eighty-nine".