8185074399 has 18 divisors (see below), whose sum is σ = 12151077120. Its totient is φ = 5309229456.

The previous prime is 8185074329. The next prime is 8185074409. The reversal of 8185074399 is 9934705818.

8185074399 is a `hidden beast` number, since 8 + 1 + 8 + 507 + 43 + 99 = 666.

It is not a de Polignac number, because 8185074399 - 2⁸ = 8185074143 is a prime.

It is a super-2 number, since 2×8185074399² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8185074329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 319839 + ... + 344480.

It is an arithmetic number, because the mean of its divisors is an integer number (675059840).

Almost surely, 2^8185074399 is an apocalyptic number.

8185074399 is a deficient number, since it is larger than the sum of its proper divisors (3966002721).

8185074399 is a wasteful number, since it uses less digits than its factorization.

8185074399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664399 (or 664359 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 8185074399 is about 90471.4010005372. The cubic root of 8185074399 is about 2015.3054395601.

The spelling of 8185074399 in words is "eight billion, one hundred eighty-five million, seventy-four thousand, three hundred ninety-nine".