7851852641 has 8 divisors (see below), whose sum is σ = 8102077704. Its totient is φ = 7604423680.

The previous prime is 7851852623. The next prime is 7851852643. The reversal of 7851852641 is 1462581587.

It can be written as a sum of positive squares in 4 ways, for example, as 1500400225 + 6351452416 = 38735^2 + 79696^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7851852641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7851852643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693320 + ... + 704553.

It is an arithmetic number, because the mean of its divisors is an integer number (1012759713).

Almost surely, 2^7851852641 is an apocalyptic number.

It is an amenable number.

7851852641 is a deficient number, since it is larger than the sum of its proper divisors (250225063).

7851852641 is a wasteful number, since it uses less digits than its factorization.

7851852641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398051.

The product of its digits is 537600, while the sum is 47.

The square root of 7851852641 is about 88610.6801745704. The cubic root of 7851852641 is about 1987.5773858349.

The spelling of 7851852641 in words is "seven billion, eight hundred fifty-one million, eight hundred fifty-two thousand, six hundred forty-one".