7818260101 has 4 divisors (see below), whose sum is σ = 8278157772. Its totient is φ = 7358362432.

The previous prime is 7818260071. The next prime is 7818260117. The reversal of 7818260101 is 1010628187.

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 5480440900 + 2337819201 = 74030^2 + 48351^2 .

It is a cyclic number.

It is not a de Polignac number, because 7818260101 - 2²⁹ = 7281389189 is a prime.

It is a super-2 number, since 2×7818260101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7818260141) 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 3 ways as a sum of consecutive naturals, for example, 229948810 + ... + 229948843.

It is an arithmetic number, because the mean of its divisors is an integer number (2069539443).

Almost surely, 2^7818260101 is an apocalyptic number.

It is an amenable number.

7818260101 is a deficient number, since it is larger than the sum of its proper divisors (459897671).

7818260101 is a wasteful number, since it uses less digits than its factorization.

7818260101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459897670.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 7818260101 is about 88420.9256963531. The cubic root of 7818260101 is about 1984.7388533143.

Adding to 7818260101 its reverse (1010628187), we get a palindrome (8828888288).

The spelling of 7818260101 in words is "seven billion, eight hundred eighteen million, two hundred sixty thousand, one hundred one".