7842066965 has 4 divisors (see below), whose sum is σ = 9410480364. Its totient is φ = 6273653568.

The previous prime is 7842066961. The next prime is 7842066989. The reversal of 7842066965 is 5696602487.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4869527524 + 2972539441 = 69782^2 + 54521^2 .

It is a cyclic number.

It is not a de Polignac number, because 7842066965 - 2² = 7842066961 is a prime.

It is a super-2 number, since 2×7842066965² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7842066961) 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 3 ways as a sum of consecutive naturals, for example, 784206692 + ... + 784206701.

It is an arithmetic number, because the mean of its divisors is an integer number (2352620091).

Almost surely, 2^7842066965 is an apocalyptic number.

It is an amenable number.

7842066965 is a deficient number, since it is larger than the sum of its proper divisors (1568413399).

7842066965 is a wasteful number, since it uses less digits than its factorization.

7842066965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568413398.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The square root of 7842066965 is about 88555.4457105829. The cubic root of 7842066965 is about 1986.7513440997.

The spelling of 7842066965 in words is "seven billion, eight hundred forty-two million, sixty-six thousand, nine hundred sixty-five".