7836768818 has 6 divisors (see below), whose sum is σ = 11755341021. Its totient is φ = 3918321812.

The previous prime is 7836768809. The next prime is 7836768827. The reversal of 7836768818 is 8188676387.

It is an interprime number because it is at equal distance from previous prime (7836768809) and next prime (7836768827).

It can be written as a sum of positive squares in 2 ways, for example, as 7571958289 + 264810529 = 87017^2 + 16273^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=62597.

It is a super-2 number, since 2×7836768818² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 93896 + ... + 156492.

Almost surely, 2^7836768818 is an apocalyptic number.

7836768818 is a deficient number, since it is larger than the sum of its proper divisors (3918572203).

7836768818 is an frugal number, since it uses more digits than its factorization.

7836768818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125196 (or 62599 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 62.

The square root of 7836768818 is about 88525.5263638686. The cubic root of 7836768818 is about 1986.3038229674.

The spelling of 7836768818 in words is "seven billion, eight hundred thirty-six million, seven hundred sixty-eight thousand, eight hundred eighteen".