7682618138 has 16 divisors (see below), whose sum is σ = 13140406440. Its totient is φ = 3337245696.

The previous prime is 7682618131. The next prime is 7682618159. The reversal of 7682618138 is 8318162867.

It can be written as a sum of positive squares in 4 ways, for example, as 6217795609 + 1464822529 = 78853^2 + 38273^2 .

It is not an unprimeable number, because it can be changed into a prime (7682618131) by changing a digit.

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, 8690303 + ... + 8691186.

Almost surely, 2^7682618138 is an apocalyptic number.

7682618138 is a deficient number, since it is larger than the sum of its proper divisors (5457788302).

7682618138 is a wasteful number, since it uses less digits than its factorization.

7682618138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17381521.

The product of its digits is 774144, while the sum is 50.

The square root of 7682618138 is about 87650.5455659005. The cubic root of 7682618138 is about 1973.1938313381.

The spelling of 7682618138 in words is "seven billion, six hundred eighty-two million, six hundred eighteen thousand, one hundred thirty-eight".