7985764419 has 4 divisors (see below), whose sum is σ = 10647685896. Its totient is φ = 5323842944.

The previous prime is 7985764403. The next prime is 7985764421. The reversal of 7985764419 is 9144675897.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7985764419 - 2⁴ = 7985764403 is a prime.

It is a super-2 number, since 2×7985764419² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7985764439) 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 3 ways as a sum of consecutive naturals, for example, 1330960734 + ... + 1330960739.

It is an arithmetic number, because the mean of its divisors is an integer number (2661921474).

Almost surely, 2^7985764419 is an apocalyptic number.

7985764419 is a deficient number, since it is larger than the sum of its proper divisors (2661921477).

7985764419 is a wasteful number, since it uses less digits than its factorization.

7985764419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661921476.

The product of its digits is 15240960, while the sum is 60.

The square root of 7985764419 is about 89363.1043496140. The cubic root of 7985764419 is about 1998.8129972349.

The spelling of 7985764419 in words is "seven billion, nine hundred eighty-five million, seven hundred sixty-four thousand, four hundred nineteen".