8140919485 has 16 divisors (see below), whose sum is σ = 10005062256. Its totient is φ = 6357270528.

The previous prime is 8140919473. The next prime is 8140919539. The reversal of 8140919485 is 5849190418.

It can be written as a sum of positive squares in 8 ways, for example, as 45778756 + 8095140729 = 6766^2 + 89973^2 .

It is a cyclic number.

It is not a de Polignac number, because 8140919485 - 2⁵ = 8140919453 is a prime.

It is a super-2 number, since 2×8140919485² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 79564 + ... + 150373.

It is an arithmetic number, because the mean of its divisors is an integer number (625316391).

Almost surely, 2^8140919485 is an apocalyptic number.

It is an amenable number.

8140919485 is a deficient number, since it is larger than the sum of its proper divisors (1864142771).

8140919485 is a wasteful number, since it uses less digits than its factorization.

8140919485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230112.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 8140919485 is about 90227.0440887875. The cubic root of 8140919485 is about 2011.6750049324.

The spelling of 8140919485 in words is "eight billion, one hundred forty million, nine hundred nineteen thousand, four hundred eighty-five".