7965019993 has 16 divisors (see below), whose sum is σ = 9138908416. Its totient is φ = 6800189760.

The previous prime is 7965019957. The next prime is 7965020003. The reversal of 7965019993 is 3999105697.

7965019993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-7965019993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7965019913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2852428 + ... + 2855218.

It is an arithmetic number, because the mean of its divisors is an integer number (571181776).

Almost surely, 2^7965019993 is an apocalyptic number.

It is an amenable number.

7965019993 is a deficient number, since it is larger than the sum of its proper divisors (1173888423).

7965019993 is a wasteful number, since it uses less digits than its factorization.

7965019993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264.

The product of its (nonzero) digits is 4133430, while the sum is 58.

The square root of 7965019993 is about 89246.9606933480. The cubic root of 7965019993 is about 1997.0807404517.

The spelling of 7965019993 in words is "seven billion, nine hundred sixty-five million, nineteen thousand, nine hundred ninety-three".