7982015789 has 4 divisors (see below), whose sum is σ = 8707653600. Its totient is φ = 7256377980.

The previous prime is 7982015773. The next prime is 7982015807. The reversal of 7982015789 is 9875102897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9875102897 = 11 ⋅897736627.

It is a cyclic number.

It is not a de Polignac number, because 7982015789 - 2⁴ = 7982015773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7982015719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362818889 + ... + 362818910.

It is an arithmetic number, because the mean of its divisors is an integer number (2176913400).

Almost surely, 2^7982015789 is an apocalyptic number.

It is an amenable number.

7982015789 is a deficient number, since it is larger than the sum of its proper divisors (725637811).

7982015789 is a wasteful number, since it uses less digits than its factorization.

7982015789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725637810.

The product of its (nonzero) digits is 2540160, while the sum is 56.

The square root of 7982015789 is about 89342.1277393817. The cubic root of 7982015789 is about 1998.5001913181.

The spelling of 7982015789 in words is "seven billion, nine hundred eighty-two million, fifteen thousand, seven hundred eighty-nine".