8193145239 has 24 divisors (see below), whose sum is σ = 11878289280. Its totient is φ = 5441946768.

The previous prime is 8193145231. The next prime is 8193145243. The reversal of 8193145239 is 9325413918.

It is a happy number.

8193145239 is a `hidden beast` number, since 8 + 193 + 1 + 452 + 3 + 9 = 666.

It is not a de Polignac number, because 8193145239 - 2³ = 8193145231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8193145194 and 8193145203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8193145231) 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 23 ways as a sum of consecutive naturals, for example, 4688964 + ... + 4690710.

It is an arithmetic number, because the mean of its divisors is an integer number (494928720).

Almost surely, 2^8193145239 is an apocalyptic number.

8193145239 is a deficient number, since it is larger than the sum of its proper divisors (3685144041).

8193145239 is a wasteful number, since it uses less digits than its factorization.

8193145239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379 (or 3376 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 8193145239 is about 90515.9943822085. The cubic root of 8193145239 is about 2015.9676149548.

The spelling of 8193145239 in words is "eight billion, one hundred ninety-three million, one hundred forty-five thousand, two hundred thirty-nine".