7989307645 has 8 divisors (see below), whose sum is σ = 10458730080. Its totient is φ = 5810405520.

The previous prime is 7989307633. The next prime is 7989307657. The reversal of 7989307645 is 5467039897.

It is an interprime number because it is at equal distance from previous prime (7989307633) and next prime (7989307657).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7989307645 - 2⁷ = 7989307517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7989307645.

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 7 ways as a sum of consecutive naturals, for example, 72630015 + ... + 72630124.

It is an arithmetic number, because the mean of its divisors is an integer number (1307341260).

Almost surely, 2^7989307645 is an apocalyptic number.

It is an amenable number.

7989307645 is a deficient number, since it is larger than the sum of its proper divisors (2469422435).

7989307645 is a wasteful number, since it uses less digits than its factorization.

7989307645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145260155.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The square root of 7989307645 is about 89382.9270330749. The cubic root of 7989307645 is about 1999.1085731548.

The spelling of 7989307645 in words is "seven billion, nine hundred eighty-nine million, three hundred seven thousand, six hundred forty-five".